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A 47.0g golf ball is driven from the tee with an initial speed of 52.0 m/s and rises to a height of 24.6 m. neglect air resistance and determine the kinetic energy of the ball at its highest point.
A piece of moon rock reads 3.261 N on a scale when in air, but 2.074 N in a fluid having a density of 870 kg/m3. What is the density of the moon rock in kg/m3
A 5 kg ball strikes a massive wall at 11 m/s at an angle of ?=65.0° with the plane of the wall. It bounces off the wall with the same speed and angle. what is the average force exerted by the wall on the ball in y direction
A 1.5 kg object has a velocity of 5j m/s at t=0. It is accelerated at a constant rate for five seconds after which it has a velocity of (6i+12j) m/s
Light traveling in water strikes the boundary between two mediums at an angle of 35 degrees. what is the wavelength of the refracted light traveling at 1.85x10^8m/s
A pair of speakers separated by 0.820 m are driven by the same oscillator at a frequency of 652 Hz. An observer originally positioned at one of the speakers begins to walk along a line vertical to the line joining the speakers.
A pendulum clock has an aluminum pendulum exactly 1.0m long when the clock is calibrated perfectly. The temperature increases by 9?C. By how much is it off at the end of one day
Two blocks attached by a string (see figure) slide down a 15° incline. Block 1 has mass m1 = 0.91 kg and block 2 has mass m2 = 0.20 kg. Find the magnitude of the acceleration of the blocks
A beam of light is emitted 8.2cm beneath the surface of a liquid and strikes the surface 7.2cm from the point directly above the source. what can you say about the index of refraction of the liquid
Two small metal spheres with masses 2.0 {rm g} and 4.0 {rm g} are tied together by a 5.3-{rm cm}-long massless string and are at rest on a frictionless surface. Each is charged to +2.3 mu C. What is the energy.
A bullet is fired horizontally with an initial velocity of 900 m/s at a target located 150 m from the rifle. How much time is required for the bullet to reach the target
What least horsepower must a motor have to be able to drag a 320 box along a level floor at a speed of 1.10 if the coefficient of friction is 0.50.
Two objects (m1 = 2.15 kg and m2 = 4.30 kg) sit on a horizontal, frictionless surface and are pushed together with a compressed spring between them. How much energy was stored in the spring
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