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A 0.5 kilogram rubber ball is dropped from a height of 3.0 meter above a hard concrete ground. After striking the ground the ball bounces up to a height of 2.0 meter above the ground. The ball was in contact with the ground for 0.05 second.
Find the change in momentum of the ball during the interaction with the ground.
Find the magnitude of the average force of the ground on the ball during the interaction.
A surgeon is attempting to correct a detached retina by using a pulsed laser. If the pulses last for 36.0 ms, how many photons are present in each pulse
A lead block is suspended from the underside of a 0.8 kg block of wood of density of 720 kg/m3. what is the mass of the lead block
The space shuttle is in a 250 mile high orbit. what are the shuttle's orbital period and speed
An astronaut is being tested in a centrifuge. The centrifuge has a radius of 3.58 m, what is the magnitude of the astronaut's linear speed
A 1.5 kg box moves back and forth on a horizontal surface with a coefficient of kinetic friction 0.18 between two different springs, 0.83 m apart. The box is initially pressed against the stronger spring (spring constant, k=32N/cm), compressing i..
Dario, a prep cook at an Italian restaurant, spins a salad spinner and observes that it rotates 20.0 times in 5.00 seconds and then stops spinning it. What is the angular acceleration of the salad spinner
Long, long ago, on a planet far, far away, a physics experiment was carried out. First, a 0.250- ball with zero net charge was dropped from rest at a height of 1.70. The ball landed 0.400 later. Next, the ball was given a net charge of 7.85 and dropp..
Why must a thermom be calibrated? You have a glass bulb thermom with no markings on it, and a second one marked in degrees Celsius. Describe how you would calibrate the unmarked thermom.
a typical cost for electric power is 12.0 per kilowatt-hour. a some people leave their porch light on all the time.
q1. a 2.62 kg mass attached to a light string rotates on the horizontal frictionless table. the radius of the circle is
Referring to a baggage carousel at an airport. Your suitcase has not slid all the way down the slope and is going around at a constant speed on a cirle (r=11.0m) as the carousel turns.
A person lifts a 3.5 kg cement block avertical distance of 1.43 m and thencarries the block horizontally a distance of 13.70 m. How much work is done by the person in the process
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