Physics High School
Answers
Answer 1
The 150-n>c e field that is produced by the electric charge on Earth's surface. The electric field should have a negative charge as it is pointing towards the core of the earth. Thus,q=−4C.
In order to overcome his or her weight, the electrostatic force must balance his or her weight i.e., qE=mg
⇒q= mg/E = 60×10/150 =4C
As the electric field is directed toward the earth's center, the sign of charge should be negative.Thus,q=−4C
An electric field is a physical phenomenon that surrounds electric charges and exerts a force on other charges placed within its influence. It is a vector field, meaning it has both magnitude and direction and is described using the concept of electric field lines. The electric field is created by a charged object and can be either positive or negative in nature. The strength of an electric field is measured in volts per meter (V/m), and its direction is determined by the charge creating it. The electric field is a fundamental concept in electromagnetism, and its understanding is crucial to the functioning of many devices, including capacitors, electric motors, and generators.
Learn more about electric field here:
https://brainly.com/question/30544719
#SPJ4
Related Questions
You are the navigator of a TWA flight scheduled to fly from New Orleans due north to St. Louis, a distance of 673 miles. Your instruments tell you that there is a steady windfrom the northwest with a speed of 105 mph. The pilot sets the air speed at 575 mph and asks you to find the estimated flying time. What do you tell her?
Answers
To find the estimated navigator flying time, you need to use the formula:
time = distance / speed
where distance is the total distance from New Orleans to St. Louis, and speed is the effective speed of the plane, taking into account the wind.
Since the wind is blowing from the northwest, which is perpendicular to the northward direction of the plane, you can use the Pythagorean theorem to find the effective speed:
effective speed = sqrt(575^2 + 105^2) = 583 mph
Then, you can calculate the estimated flying time as follows:
time = 673 miles / 583 mph = 1.154 hours
So you should tell the navigator pilot that the estimated flying time is approximately 1 hour and 9 minutes.
What Is The Navigator?
Navigator is a person on a ship or plane whose job is to navigate it. The main task of the navigator is to inform the position of the ship or aircraft at all times. The main job of the navigator is to tell the position of the ship or aircraft at all times. His duties include planning the trip, advising the captain of the ship or aircraft commander about the timeframe to the destination while en route, and notifying hazards so they can be avoided.
Learn More About Navigator at https://brainly.com/question/28643554
#SPJ4
A gamma ray of wavelength 1.00 × 10^–8 cm has enough energy to remove an electron from a hydrogen atom.a. Trueb. False
Answers
It is true that gamma rays with a wavelength of 1.00 × 10⁻⁸ cm are high-energy photons, they indeed have the energy required for the photoelectric effect to occur.
What is wavelength?
Wavelength is a measure of the distance between consecutive peaks or troughs in a wave. In physics, it is a fundamental characteristic of a wave that describes its size and shape. The wavelength of a wave can be determined by measuring the distance between two consecutive peaks or troughs of the wave and dividing that distance by the number of peaks or troughs that fit into that distance. The unit of wavelength is typically meters (m) or nanometers (nm) for electromagnetic waves, such as light and radio waves, and meters (m) or millimeters (mm) for sound waves.
Here,
Gamma rays, also known as gamma photons, are high-energy photons with very short wavelengths and high frequencies. They are emitted from the nucleus of an atom during radioactive decay or from other high-energy processes.
Gamma rays with a wavelength of 1.00 × 10⁻⁸ cm indeed have enough energy to remove an electron from a hydrogen atom.
To know more about wavelength,
https://brainly.com/question/13533093
#SPJ4
a proton and an electron are in a constant electric field created by oppositely charged plates. you release the proton from the positive side and the electron from the negative side. which feels the larger electric force?
Answers
A continuous electric field is produced by plates with opposing charges around an electron and a proton. The electron is released from the negative side, and the proton is released from the positive side.
In an electric field, a proton faces which way?
The electric field of a proton is pointed outward, whereas the field of an electron is pointed inside. These fields interact with other particles by acting as a particle that warps the space around it.
What is the vector formula for an electric field?
The force acting on the positive charge is pointed in the same directions as that of the electric field, which is a vector field. The electric field is measured in N/C units. E=Fqtest=k|Q|r2. The size of the electrical field produced by a charged object Q is determined by this equation.
To know more about charges visit:
https://brainly.com/question/13871705
#SPJ4
Given a force of 10 N and an acceleration of 5 m/s/s, what is the mass?
Answers
Answer:
[tex]mass = 2.0kg[/tex]
Explanation:
Greetings!!!
Given values :-
Force (F)= 10N
Acceleration (a)= 5m/s²
required value :-
Mass(m)= ?
Solution :-
Firstly, recall the Newton's second law.
F=ma
substitute known variables into the equation
(10)=m(5)
solve for mass.
m=2.0kg
if you have any questions or unclear ideas tag on comments
Hope it helps!!!
When calculating acceleration, 5/m/s/s can also be written as - question 6 options: a. 5 meters per second squared b. 5 meters per minute c. it cannot be written differently d. 5 meters
Answers
Answer: A. Meters per second squared
Explanation: The internet
5/m/s/s, or 5 meters per second square, can also be used to calculate acceleration.
Explain what acceleration is.
The acceleration is considered to be zero because when object's velocity stays constant throughout the motion. because the velocity does not alter as the time changes. For instance, an automobile traveling at a steady speed on the roadway has no acceleration. An object is still moving even while it travels in a circle at a constant speed because the orientation of its velocity is changing. A net force affects an object's motion; the greater the neutral energy, the more speed the object experiences.
What are the three types of acceleration?
The three primary kinds of rapid kinematics are produce fine, – anti kinetic energy, but uniform acceleration. The term "uniform acceleration" refers to a situation in which an object moves linearly while accelerating at regular intervals.
To know more about acceleration visit:
https://brainly.com/question/20382454
#SPJ4
Poor aerobic capacity can make it difficult to
stretch properly
keep up during games
lift heavy weights
follow an exercise plan
Answers
Answer:
B. keep up during games
Explanation:
There is really only one explanation I can conclude which would be the following.
The lack of aerobic fitness might make it hard to keep track during games because like I sad there was a lack of aerobic fitness, which would support my answer making sure that it is correct and not wrong.
Explore similar answers here:
brainly.com/question/851503
what does a voltmeter measure? the difference in the electric potential between two points the energy of a particle in ev the value of the electric potential at a point
Answers
Voltmeter measures the difference in the electric potential between two points. Option a is the correct choice.
A voltmeter is an instrument used to measure the potential difference or voltage between two points in an electrical circuit. The unit of measurement for voltage is volts (V), and the voltmeter is designed to measure this quantity.
When the voltmeter is connected across two points in a circuit, it measures the difference in electric potential between those two points, which is the voltage across the two points. Therefore, option a is the correct answer.
To know more about the voltmeter, here
brainly.com/question/7972599
#SPJ4
--The complete question is, What does a voltmeter measure?
a. the difference in the electric potential between two points
b. the energy of a particle in ev
c. the value of the electric potential at a point--
plates of a parallel-plate capacitor are 2.00 mm apart, and each has an area of 9.75 cm2. each plate carries a charge of 20.0 nc. assume the plates are in vacuum. what is a. the capacitance? b. the potential difference between the plates? c. the magnitude of the electric field between the plates? d. now assume the plates are filled with teflon. what is the capacitance?
Answers
A parallel-plate capacitor has plates that are each 9.75 cm² in the area and are spaced 2.00 mm apart. There is a 20.0 fee on each plate. The potential difference between the plates is 10 * 10³ V.
Each plate has a surface area of 0.00192 m2. the capacitance is 8.5 * 10⁻¹² F.
part A )
electric field , E = 5 *10⁶ N/C
potential difference , V = E * d
V = 5 *10⁶ * 2 *10⁻³
V = 10 *10³ V
the potential difference between the plates is 10 *10³ V
part B)
E = 5 *10⁶ N/C
E = charge /(area * epsilon)
5 *10⁶ = 85 * 10⁻⁹ /( A * 8.85*10⁻¹²)
A = 0.00192 m²
area of each plate is 0.00192 m²
part c)
let the capacitance be C
Q = C * V
85*10⁻⁹ = 10 *10³ * C
C = 8.5 * 10⁻¹² F
the capacitance is 8.5 * 10⁻¹² F
A capacitor is an electronic component that stores electrical energy. It consists of two conductive plates separated by a dielectric material, such as air, paper, or plastic. When a voltage is applied to a capacitor, it charges up by storing energy in its electric field. Once the capacitor is fully charged, it can be used to release that stored energy quickly, making it useful in a variety of electrical applications.
Learn more about capacitor here:
https://brainly.com/question/17176550
#SPJ4
-1 in profectiic is spred with a velocity of 400 mms I at an angle of 30° to the horizontal. Find the time to reach the greatest height and it horizontal range
Answers
The time for the projectile to reach the maximum height is 20.4 seconds.
The horizontal range of the projectile is 14,139.2 m.
What is the time for the projectile to reach maximum height?
The time for the projectile to reach the maximum height is calculated as follows;
t = ( u sinθ ) / ( g )
where;
u is the initial velocityθ is the angle of projectiong is acceleration due to gravity
t = ( 400 m/s x sin 30 ) / ( 9.8 )
t = 20.4 seconds
The horizontal range of the projectile is calculated as follows;
d = ( u² sin(2θ) ) / g
d = ( 400² x sin ( 2 x 30 ) ) / ( 9.8 )
d = 14,139.2 m
Learn more about horizontal distance here: https://brainly.com/question/24784992
#SPJ1
change the simulation to match the temperature of sirius a (temperature of 10,000 k). you may need to zoom out to see the full spectrum. determine the peak wavelength for sirius a in nanometers
Answers
The peak wavelength for Sirius is calculated to be in the ultraviolet range, around 160 - 190 nanometers.
To understand the peak wavelength for Sirius, we need to look at the temperature of the star. Sirius has a temperature of 10,000 K which is extremely hot compared to our sun.
This high temperature means that the majority of the light emitted by Sirius is in the ultraviolet range.. By using a simulation to match the temperature of Sirius we can determine that the peak wavelength is likely to be around 160 - 190 nanometers.
This peak wavelength tells us the color of light that Sirius emits the most and can be used to study the star and its properties in greater detail.
Learn more about peak wavelength brainly.com/question/29470966
#SPJ4
If a bicyclist, with an initial velocity of zero, steadily gained speed until reaching a final velocity of 26m/s, how far would she travel during this race?
Answers
The answer to the question is 34.46 m, or the distance covered by the bicycle during the race.
What is Distance?
Distance has been the amount of an object's motion, independently of directions. Distance could be described as the amount of space an item has covered, regardless of its starting and ending position.
According to the equation v² = u² + 2 as where;
v(final velocity) of the bicyclist = 26 m/s
u (initial velocity) of the bicyclist = 0 m/s
(acceleration ) a due to gravity = 9.81 m / s
s (distance) covered during travel
To get the distance traveled, substitute the physical parameters into to the calculation above.
26² = 0² + 2(9.81)s
676 = 19.62 s
Divide both sides by 19.62
676 / 19.62 = 19.62s / 19.62
s = 34.46 m
During the race, the cyclist covered a distance of 34.46 m.
To know more about distance visit :
https://brainly.com/question/29010569
#SPJ4
calculate the energy used per day (kwh) of a car with an efficiency of 8 kilometers per liter and has driven 85 kilometers in the past 7 days
Answers
In the last 7 days, the car has consumed 10.625 litres of petrol. This amounts to a daily energy consumption of 356.38 kWh.
Determine the fuel use in litres.
The following equation may be used to determine the fuel usage because the car has an efficiency of 8 kilometres per litre:
Fuel Consumption (L) = Distance Driven (km) / Efficiency (km/L)
Fuel Consumption (L) = 85 km / 8 km/L
Fuel Consumption (L) = 10.625 L
Determine the daily energy use (kWh).
Since 33.7 kWh are included in 1 litre of gasoline, we can apply the following equation to determine how much energy is consumed daily:
Energy Used per Day (kWh) = Fuel Consumption (L) x Energy Content (kWh/L)
Energy Used per Day (kWh) = 10.625 L x 33.7 kWh/L
Energy Used per Day (kWh) = 356.38 kWh
The car has used 10.625 liters of fuel in the past 7 days. This equates to 356.38 kWh of energy used per day.
To learn more about gasoline visit:
https://brainly.com/question/30379451
#SPJ4
An 8000 kg truck starts iff from rest and reaches a velocity of 18 m/s in 6 s. What is the truck's acceleration and how much momentum does it have reached this final velocity?
Answers
Answer:
Explanation:
a = Δv/t = (18 m/s - 0) / 6 s = 3 m/s²
Momentum = P = mv = (8000 kg)(18 m/s) = 144,000 kg·m/s
suppose earth were moved to one-third of its current distance from the sun. what would happen to the gravitational force between earth and the sun?
Answers
If the Earth were moved to one-third of its current distance from the Sun, the gravitational force between them would increase significantly.
The gravitational force between the Earth and the Sun is given by the formula:
F = G*m1*m2/r²
here,
F is gravitational force,
G is gravitational constant,
m1 and m2 are masses of Earth and Sun, respectively, and
r is distance between the Earth and the Sun.
If the Earth were moved to one-third of its current distance from the Sun, the new distance between them would be 1/3 of the original distance, or approximately 0.33 times the original distance.
Reversing this new distance into the gravitational force formula:-
F' = G*m1*m2 /(0.33*r)²
F' = G*m1*m2 / 0.1089*r²
So, the gravitational force between the Earth and the Sun would increase, because the force is inversely proportional to the square of the distance between them. If the distance between them is reduced by a factor of 3, the force would increase by a factor of (1/0.1089), which is approximately 9.2 times the original force.
Therefore, if the Earth were moved to one-third of its current distance from the Sun, the gravitational force between them would increase significantly, which would have significant consequences on the Earth's orbit and climate, as well as the overall stability of the solar system.
To know more about Earth please refer: https://brainly.com/question/12528243
#SPJ4
When multiple waves travel through the same medium, they can interact with each other. Which of the following events can occur?
I The trough of one wave can add to the crest of another wave, increasing the amplitude.
II The crest of one wave can add to the crest of another wave, increasing the amplitude.
III The trough of one wave can add to the trough of another wave, increasing the amplitude.
II only
I and II only
II and III only
I only
Answers
When multiple waves travel through the same medium, they interact with each other. The event that can occur is the crest of one wave can add to the crest of another wave, increasing the amplitude. Thus, the correct option for this question is A.
What is this process known as?
This process is known as wave interference. This is the phenomenon that significantly occurs when two waves meet while traveling along the same medium. This interference of waves causes the medium to take on a shape that results from the net effect of the two individual waves upon the particles of the medium.
The phenomenon of wave interference makes the process spontaneous with respect to the crest. The principle of superposition may be applied to waves whenever two (or more) waves travel through the same medium at the same time. The waves pass through each other without being disturbed.
Therefore, the correct option for this question is A.
To learn more about Wave interference, refer to the link:
https://brainly.com/question/9655287
#SPJ1
The planet Venus has a reflectivity of 0.75 to the sun's radiation and an emissivity of 1.0 for Venus' radiation. The average distance of Venus from the sun is 1.08x10^8 km. The radius of the sun is 6.955x10^5 km and the blackbody temperature of the sun is 5770 K. What is the extent of the greenhouse effect for Venus in degrees Kelvin if the observed surface temperature of Venus is 700 K? You are to do this analysis ignoring the atmosphere of Venus and then comparing your temperature to the observed temperature of 700 K. The difference between your temperature and the observed temperature should be called the greenhouse effect.
Answers
The extent of the greenhouse effect for Venus is 597.98 Kelvin if the observed surface temperature of Venus is 700 K.
The solar constant, or the amount of energy that the sun emits per unit area per unit time, can be calculated using the Stefan-Boltzmann law:
E = σT^4
where σ is the Stefan-Boltzmann constant (5.67 x 10⁻⁸ W/m² K⁴) and T is the temperature of the sun in kelvins.
The radiant energy received by Venus from the sun can be calculated as follows:
E = (σT⁴) × (πR²) / (4πd²)
where R is the radius of the sun and d is the average distance of Venus from the sun.
E = (5.67 x 10⁻⁸) × (5770)⁴ × (π × (6.955 x 10⁸)²) / (4π × (1.08 x 10¹¹)²)
E = 651.59 Joules
Next, we can calculate the temperature of Venus if it were not for the greenhouse effect, it radiates as a blackbody with an emissivity of 0.75. This temperature can be calculated using the following equation:
E = σT₁⁴
Where T₁ is the surface temperature of Venus.
T₁ = (E / σ)⁽°²⁵⁾ = (651.59 / (5.67 x 10^-8))^(1/4)
T₁ = 102.82 K
The greenhouse effect can be calculated as the difference between the observed surface temperature of Venus (700 K) and the temperature of Venus without the greenhouse effect:
Greenhouse effect = 700 K - T₁
= 700 - 102.82 = 597.18
To know more about greenhouse effect, here
https://brainly.com/question/13706708
#SPJ4
A horse performs 15000 joules of work pulling a wagon for 20 seconds what is the horse’s power p= w= t=
Answers
Horse Power is 750W.
From your question,
determine the strength of the horse
Power is the rate of work completion. The quantity of energy moved or transformed per time unit is known as power in physics. The watt, or one joule per second, is the power unit used in the Worldwide System of Units. Force is sometimes referred to as activity in older writings. A scalar quantity is power. ∴ The following formula can be used to determine a horse's performance:
power = work / time
from the question
Work = 15000J
time = 20 seconds
insert the parameter into the formula
Power = 750W
Therefore horsepower is 750W
Learn more about Power
brainly.com/question/13357691
#SPJ4
How is power defined? question 3 options:
a. the direction of the work b. the total distance c. an object is moved
d. the rate at which work is accomplished
Answers
Answer:
d. the rate at which work is accomplished.
Explanation:
The SI unit for Power is Joules
a rock is thrown straight upward, reaching a height of 20 meters. in which segment of its flight does it spend the most time?
Answers
a rock is thrown straight upward, reaching a height of 20 meters, in the top 5 meters segment of its flight does it spend the most time.
What is speed?
Velocity, as opposed to speed, refers to the pace and direction of such an object's movements since it goes along a path. To put it another way, velocity is a vector, whereas speed is a scalar quantity. Miles per hour (mph), kilometres per hour (km/h), and meters per second (m/s) are the three most popular speed units (mph). The distance an item moves in a unit of time is measured as its speed. Speed equals distance x time is the speed equation. Meters per second, sometimes known as m/s or ms⁻¹, is the SI unit of speed.
The reason for this is that since speed and time are inversely related, everything we throw into the air loses speed and slows to a stop at the height point, when it becomes zero. Since the speed at the top 5 meters decreases, this causes the process to take longer.
To know more about height refer to:
https://brainly.com/question/30145152
#SPJ4
The complete question is as follows:
A rock is thrown straight upwards reaching a height of 20 meters. In which segment of its flight does it spend the most time?
A. the bottom 5 meters
B. the middle 5 meters
C. the top 5 meters
D. the time it spends is equal during all distance intervals
a good diffraction grating has 2590 lines/cm. what is the distance between two lines in the grating?
Answers
The distance between two lines in the diffraction is 3.84 x 10^-4 cm.
Diffraction refers to the bending or spreading of waves around an obstacle or through an opening, resulting in an interference pattern. It is a phenomenon that occurs when waves encounter an object or an opening that is comparable in size to their wavelength.
Diffraction is observed with different types of waves, such as light waves, sound waves, and water waves. The distance between two lines in a diffraction grating can be calculated as follows:
d = 1 / (number of lines per unit length)
For a diffraction grating with 2590 lines per cm, the distance between two lines can be calculated as follows:
d = 1 / (2590 lines/cm)
=> 1 / 2590 cm/line
=> 3.84 x 10^-4 cm/line
To learn more about Diffraction :
https://brainly.com/question/30582135
#SPJ4
suppose that a planet is orbiting a star that we are observing. when the planet between us and the star it is said to exhibit a(n)
Answers
Transit. This occurs when the planet passes in front of the star from our perspective, blocking some of the light from the star and causing a periodic dip in the brightness of the star.
What is light ?
Light is a form of energy that is both visible and invisible. It is made up of electromagnetic waves that travel in a straight line at a constant speed of 299,792 kilometers per second. Light is essential for many processes on Earth, such as photosynthesis and vision. It is produced naturally by the sun and other stars, and artificially by electric lamps, light bulbs, and lasers. Light has many uses, including communication, navigation, entertainment, and medical treatments. It is also used in scientific research, such as astronomy and particle physics. Light has two basic properties—color and intensity.
To learn more about light
https://brainly.com/question/87265
#SPJ4
if a mass on a spring moving horizontally were taken to the moon, would its frequency change from that on the earth?
Answers
The frequency of a mass on a spring moving horizontally would change if it were taken to the moon due to the difference in the gravitational field between the moon and the Earth.
The frequency of the spring-mass system is determined by its mass and the spring constant, as well as the acceleration due to gravity.
On the moon, the acceleration due to gravity is much smaller than on Earth, approximately one-sixth of Earth's gravity. This means that the force exerted on the mass by the spring is much larger compared to the gravitational force. As a result, the mass on the spring would oscillate with a higher frequency on the moon than Earth's system.
Specifically, the frequency of a spring-mass system is given by:
f = 1 / (2π) √(k/m)
where f is the frequency, k is the spring constant, and m is the mass. Since the system's mass and spring constant is constant, the system's frequency is inversely proportional to the square root of the mass.
To learn more about frequency, visit here
https://brainly.com/question/14320803
#SPJ4
which of the following is an incorrect pairing? which of the following is an incorrect pairing? numerical aperture; curved glass electron beams; shorter wavelength dark field: high contrast contrast; staining techniques magnification; refraction of radiation
Answers
It can be calculated as the sum of the sine of the half-angle of the greatest cone of light that can enter the lens and the refractive index of the medium between the object and the lens. Thus, option A is correct.
What is the numerical aperture?
A lens or a microscope's numerical aperture (NA) is a measurement of the optical system's capacity to gather light.
[tex]NA = n \times sin(θ)[/tex]
Where n is the medium's refractive index and is the angle at which the light cone enters the lens, The resolving power and light-gathering capacity of the lens or microscope increase with increasing NA.
An optical system's resolution and depth of field are significantly influenced by numerical aperture.
Therefore, Larger numerical apertures enable clearer images with higher resolution, but they often necessitate for more specialized lenses and exact alignment of the optical elements.
Learn more about numerical aperture here
https://brainly.com/question/30389395
#SPJ4
at what angle, above the horizon, should a cannon be fired in order for the cannon ball to obtain the greatest horizontal range? assume air resistance is negligible.
Answers
The cannon should be fired at an angle of 45° above the horizon in order for the cannon ball to obtain the greatest horizontal range.
A projectile travels the farthest when it is launched at an angle of 45 degrees or the angle closest to 45 will result in the greatest horizontal distance traveled. The greatest possible height will be attained and the longest duration spent in the air when the angle is 90 degrees or higher.
If there was no air resistance, throwing at a 45° angle would result in the greatest distance. However, there is air resistance, and the more air resistance there is, the faster the ball is thrown. Additionally, the longer the ball is in the air, the longer it has to slow down due to air resistance.
The route of the cannonball is parabolic. The projectile accelerates downhill while it is falling. A projectile that is going downward and picking up speed is said to have a downward acceleration.
To know more about cannon ball:
https://brainly.com/question/14867888
#SPJ4
according to their energies atomic orbitals are filled as?
Answers
In accordance with the Aufbau principle, electrons occupy atomic orbitals from the lowest energy to a highest energies.
How do atoms occupy orbitals and energy levels?
One electron represents the initial energy level. Larger atoms have more electrons. Always start by adding to the lowest energy level until it has all the electrons it can have. Electrons are subsequently filled in at the higher energy level below, and so on.
What type of energy is atomic energy?
Nuclear energy is the term used to describe the energy present in the nucleus, or core, of an atom. Nuclear energy can be used to generate electricity, but first it needs to be freed from the atom.
To know more about atomic visit:
https://brainly.com/question/7695753
#SPJ4
if you wish to store a large amount of charge in a capacitor bank, would you connect capacitors in series or in parallel? explain.
Answers
If you want to store an extensive amount of charge, it is better to connect capacitors in parallel. If you need to store a substantial amount of charge, then connecting capacitors in parallel is the way to go.
Doing so creates an equivalent capacitance that is equal to the total of each individual's capacitances, thereby increasing the capacity of the bank to handle charge. In simpler terms, if you want your capacitor bank to have more charge storage capabilities, then linking them together in parallel is the answer.
When capacitors are connected in series, the overall capacitance of the combination is lower than that of each individual capacitor. Thus, the total amount of charge that the collective can store is less than what each single capacitor is able to handle on its own.
As a result, connecting these electrical components in series will not be a very effective way to accumulate a lot of charge.
Therefore, if you want to store an extensive amount of charge, it is better to connect capacitors in parallel.
To learn more about capacitors
https://brainly.com/question/17176550
#SPJ4
what is the angular resolution (diffraction limit) of such a system of telescopes for observations at a wavelength of 500 nanometers?
Answers
The angular resolution of a system of telescopes for observations at a wavelength of 500 nanometers is determined by the diffraction limit. For a wavelength of 500 nanometers and a telescope with a diameter of 1 meter, the angular resolution of the system would be approximately 0.0067 arcseconds.
This limit is the minimum angle of resolution of an optical system limited by the wave nature of light. The diffraction limit is determined by the ratio of the wavelength of the light to the aperture of the telescope. For a wavelength of 500 nanometers and a telescope with a diameter of 1 meter, the angular resolution of the system would be approximately 0.0067 arcseconds. This is equivalent to a resolution of 1.2 milli-arcseconds per meter of aperture. In other words, a telescope with a 1-meter aperture would be able to resolve objects that are separated by an angle of 0.0067 arcseconds, equivalent to 0.2 milli-arcseconds. The angular resolution of a system of telescopes would be the sum of the individual angular resolutions of the telescopes.
To learn more about wavelength
brainly.com/question/4112024
#SPJ4
an 510 kg car is travelling 34 m/s and slams on the brakes, slowing until it is moving at a speed of 17 m/s. how much thermal energy was created?
Answers
The amount of thermal energy created is 217,755 J by a car of mass 510 kg and speed 34 m/s.
When a car slams on the brakes, the kinetic energy of the car is converted into other forms of energy, such as thermal energy, which is the energy associated with the random motion of molecules. In this case, we can calculate the amount of thermal energy generated by the car as it slows down from 34 m/s to 17 m/s.
The kinetic energy of the car before it starts braking can be calculated as:
KE1 = [tex](1/2)m(v1)^2[/tex]
where m is the mass of the car and v1 is its initial velocity.
Plugging in the given values, we get:
KE1 = [tex](1/2)(510 kg)(34 m/s)^2[/tex] = 304,590 J
The kinetic energy of the car after it has come to a stop can be calculated as:
KE2 = [tex](1/2)m(v2)^2[/tex]
where v2 is the final velocity of the car after braking.
Plugging in the given values, we get:
KE2 = [tex](1/2)(510 kg)(17 m/s)^2[/tex] = 86,835 J
The change in kinetic energy of the car due to braking is:
ΔKE = KE1 - KE2 = 304,590 J - 86,835 J = 217,755 J
Learn more about thermal energy here:
https://brainly.com/question/14668303
#SPJ4
2.
If the system mass is 400 grams and the mass of the disks hanging on the string is 40 grams, predict the acceleration.
Answers
Answer:
The acceleration of an object hanging from a string can be determined using the formula:
a = (m_system * g - T) / (m_disk + m_system)
where:
a = acceleration
m_system = mass of the system (400 grams)
m_disk = mass of the disk (40 grams)
g = acceleration due to gravity (approximately 9.8 m/s^2 or 9.8 N/kg on the surface of the Earth)
T = tension in the string
Since T = m_disk * a, we can substitute that in and solve for a:
a = (m_system * g - m_disk * a) / (m_disk + m_system)
a * (m_disk + m_system) = m_system * g - m_disk * a
a * (m_disk + m_system) + m_disk * a = m_system * g
a * m_system + m_disk * a = m_system * g
a = m_system * g / (m_system + m_disk)
Plugging in the values:
a = 400g / (400 + 40)
a = 400g / 440
a = 9.09 g (approx)
So the acceleration is approximately 9.09 times the acceleration due to gravity.
a space telescope of mass 219 kg is in low-earth orbit, moving at a constant speed of 7200 m/s (approx. 26,000 km/h). calculate the kinetic energy of the satellite in kilo-joules (kj).
Answers
The kinetic energy of a 219 kg space telescope in low-Earth orbit, which is travelling at a constant speed of 7200 m/s, is 4.99 x 10⁶ kJ.
The kinetic energy (KE) of the space telescope can be calculated using the formula:
KE = (1/2)*m*v²
here, m is mass of the telescope and v is its velocity.
Reserving the given values:-
KE = (1/2)*219 kg*(7200 m/s)²
KE = 4.99 x 10⁹ J
To convert joules (J) to kilojoules (kJ), we can divide by 1000:
KE = 4.99 x 10⁹ J / 1000
KE = 4.99 x 10⁶ kJ
Therefore, the kinetic energy of the space telescope is approximately 4.99 x 10⁶ kJ.
To know more about kinetic energy please refer: https://brainly.com/question/26472013
#SPJ4