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A 5.5- kg concrete block rests on a level table. A 3.1- kg mass is attached to the block by a string passing over a light, frictionless pulley. If the acceleration of the block is measured to be 0.9 m/s2, what is the coefficient of friction between the block and the table?
A ball is thrown upward from a platform 4.6 m high with a speed of 16 m/s, What is the magnitude of its velocity when it hits the ground
A person wearing a seat belt can withstand an acceleration of -3.0 x 10^2 m/s^2. Explain how thick should barriers be to safely stop a car that hits a barrier at 110 km/h?
At an outdoor market a bunch of bananas is set to oscillatory motion with amplitude of 20.0 cm on a spring with a force constant of 16 N/m.
imagine the water is in freefall as it drops. What charge must be on each plate.
A uniformly charged conducting sphere of 1.4 m diameter has a surface charge density of 11 µC/m2, Find the net charge in coulombs on the sphere
You are the science officer on a visit to a distant solar system. Prior to landing on a planet you measure its diameter to be 1.8x10^7m and its rotation period to be 22.3 hours, find the mass of the planet and star
A particle has a charge of +2.3 ?C and moves from point A to point B, a distance of 0.13 m. The particle experiences a constant electric force, and its motion is along the line of action of the force.
Suppose a ping-pong ball and a bowling ball are rolling toward you with the same momentum, and you exert the same average force in stopping each of them.
The spaceship Intergalactica lands on the surface of the uninhabited Pink Planet, find the acceleration due to gravity on the Pink Planet\'s surface by means of a simple pendulum of length 1.06 m
Calculate the vertical component of its velocity by the time it hits the ground
Throughout a race, runner runs 10.0 meters north, turns 45 degrees north of east, and runs 5 meters. Then, after a while, the runner turns due east and runs for 15 meters to finish the race. What is the magnitude and direction of the runner's tota..
A thick-walled hollow cylinder (inner radius=47 cm, outer radius=66 cm) rolls down a 7° incline. If it starts with a speed of 1.9-m/s, what is its speed after it has travelled 16 m? (m/s).
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