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A 0.575 kg mass falls from a height of 3.95 m. If all of the energy of this mass could be converted to visible light of wavelength 5.29E-7 m, how many photons would be produced?
a 2 kg object attached to a horizontal string moves with constant speed in a circle on a frictionless horizontal surface. Find the radius of the circle
A small, 100g cart is moving at 1.70m/s on an air track when it collides with a larger, 3.00kg cart at rest. what is the speed of the large cart after the collision
Find out kinetic energy of the merry-go-round
The currents in household wiring and power lines alternate at a frequency of 60.0 Hz. What is the wavelength of the EM waves emitted by the wiring
Starting from rest, you pull the string with a constant force F = 8 N along a nearly frictionless surface. At the instant while the center of the disk has moved a distance x = 0.12 m, a length d = 0.27 m of string has unwound off the disk.
Determine the wave speed on the string and determine the speed of sound from the data given.
A very long, thin straight line of charge has a constant charge density of 20 pC/cm. How far does the electron go before it comes back
What is the coefficient of static between crate and incline
How far must it now sail to reach its original destination. find the potential energy of the system.
A 20 kg block is stacked on top of the 20 kg block. Both blocks are glued together. What is the magnitude F of force, acting horizontally on the two blocks, that is required to make the two blocks start to move.
A 120cm3 box contains helium at a pressure of 2.20atm and a temperature of 80.0â??C. What is the initial thermal energy of each gas?
A 7.05 bullet traveling at 520 m/s embeds itself in a 1.85kg wooden block at rest on a frictionless surface. Find the amplitude of the subsequent simple harmonic motion
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