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Problem: A spring has a spring constant of 300 N/m. Find the magnitude of the force needed to compress the spring by 0.03 m. Hint: Use Hooke's law. The restoring force of an ideal spring is F=-kx, where k is the spring constant and x is the displacement of the spring from its original length.
An RC circuit is made of a 2.2 kOhm resistor and a 0.001 mF capacitor. Find how long will it take for the charge to drop to 0.01 of the initial charge
an air-filled lead balloon of radius r is totally submerged in a tank of water. a show that the thickness of the skin
An object is suspended from a mass balance. When the object is surrounded by air, the mass balance reads 150 gram. estimate the density of the unknown liquid
The kinetic frictional coefficient between the tires and the road is 1.0. Since the other car has the right of the way (there is no stop sign in the other direction but the speed limit is 25mph), so the accident seems to be your fault. But you fee..
What is the direction of the centripetal force felt by a car while taking a turn during a NASCAR race?
When the power is turned off on a turntable spinning at 78 rpm, you find that it takes 10.5 revolutions for it to stop while slowing at a constant rate. How much time passes until it stops
The rhinestones in costume jewellery are glass with index of refraction 1.50 to make them more reflective they are often coated by a layer of silicon monoxide of index of refraction 2.00 what is the minimum coating thickness required to ensure that l..
How fast should a car move toward you for the car's horn to sound 2.88% higher in frequency than as the car is stationary? The speed of sound is 343 m/s.
Assume a billiard ball is a solid sphere. Its radius is 3 cm and mass is 500 grams. The coefficient of static friction between the ball and the surface is .70. a) Where should you hit the ball so that it experiences pure rolling motion without the..
Mrs. Smith has returned to work and feels well. She does not know why she needs to have periodic blood tests due to the warfarin. What is your explanation to Mrs. Smith.
A young hockey player stands at rest on the ice holding a 1.3 kilogram helmet. Determine the mass of the hockey player
An object, 0.75 cm tall, is placed 12.0 cm to the left of a diverging lens (f = -8.00 cm). A converging lens is placed 8.00 cm to the right of the diverging lens. The final image is virtual and is 30 cm to the left of the diverging lens.
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