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A 12 kg block is at rest on a level floor.A 395 g glob of putty is thrown at theblock such that it travels horizontally, hits the block, and sticksto it. The block and putty slide 15 cm along the floor. If the coefficient of sliding friction is 0.40, what is the initial speed of the putty?
a spherical conducting shell of inner radius r1 and outer radius r2 has a charge q.a a charge q is placed at the centre
a dragster accelerates to a speed of 112 ms over a distance of 398 m. determine the acceleration assume uniform of the
question a baseball played of mass 93.2 kg is sliding horizontally into 2nd base retarded by a force of 575.4 n. what
if a car traveled at an average speed of 80 km per hour for 20 minutes and then slowed to an average speed of 50 lm per
Consider the re?ection of light from a soap bubble. The bubble is a thin ?lm of water with air on both sides. Find the minimum thickness (nm) of the bubble so that reflected light constructively interferes
An 82 kg man drops from rest on the diving board 3 m above the surface of the water and comes to rest 0.55 s after reaching the water. What force does the water exert on him.
A 1.1 long steel wire with a radius of 0.200 mm is hanging vertically. How much does the wire stretch
An ideal gas is enclosed in a cylinder that has a moveable piston on top. The piston has a mass of 6200 g and an area of 5 cm2 and is free to slide up and down.
A single electron orbits a lithium nucleus that contains three protons (+3e). The radius of the orbit is 1.76 10-11 m. Determine the kinetic energy of the electron.
a. how much heat transfer is nec to raise the temp of a .200kg piece of ice from -20c to 130c including the energy
An 80 driver gets into an empty taptap to start the day's work. The springs compress 1.8×10-2. What is the effective spring constant of spring system in the taptap.
A 2.90mW helium neon laser emits a visible laser beam with a wavelength of 635nm. How many photons are emitted per second
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