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A spinning wheel on a fireworks display is initially rotating in a counterclockwise direction. The wheel has an angular acceleration of -3.20 rad/s2. Because of this acceleration, the angular velocity of the wheel changes from its initial value to a final value of -28.0 rad/s. While this change occurs, the angular displacement of the wheel is zero. (Note the similarity to that of a ball being thrown vertically upward, coming to a momentary halt, and then falling downward to its initial position.) Find what time is required for the change in the angular velocity to occur.
Blue laser pointers are now available. If the blue laser emits 5 mW of light at 473 nm, how many photons per second is it emitting
A merry-go-round is stationary. A dog is running on the ground just outside its circumference, moving with a constant angular speed of0.695rad/s. After what time will the dog reach the bone
How to find out potential energy
) If the pressure of the 2.2-cm3 volume is reduced to 1.2 10-11 Pa (an extremely good vacuum) while the temperature remains constant, how many moles of gas remain in the container
converging lens with a diameter of 33.0 cm forms an image of a satellite passing overhead. what is the altitude of the satellite
Two radio antennas are separated by 1.20m. Both broadcast identical 750 MHz waves. If you walk around the antennas in a circle of radius 20m, how many maxima will you detect.
A point charge q = +37.0 µC moves from A to B separated by a distance d = 0.178 m in the presence of an external electric field, Find the work done by the electric force
When violet light of wavelength 415 nm falls on a single slit, it creates a central diffraction peak that is 8.80 cm wide on a screen that is 2.50m away
A tungsten target is struck by electrons that have been accelerated from rest through a 62.0-kV potential difference. Find the shortest wavelength of the radiation emitted
A laser beam (? = 632.0 nm) is incident on two slits 0.280 mm apart. How far apart are the bright interference fringes on a screen 5 m away from the double slits?
Pretend a system is having Transverse waves. And those transverse waves on a string have wave speed 8.00 m/s amplitude 0.0700m and wavelength 0.320m. Write a wave function describing the wave
One of the weapons considered for the "Star Wars" antimissile system is a laser that could destroy ballistic missiles. When a high-power laser is used in the Earth's atmosphere, the electric field can ionize the air, turning it into a conducting p..
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