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What is the force of gravity 500 km above Earth's surface? Give your answers as a percentage of the force of gravity on Earth's surface.
A 2 kg object is attached to a spring and placed on a horizontal, smooth surface. A horizontal force of 20.0 N is needed to hold the object at rest when it is pulled 0.200 m from its equilibrium position.
A lawnmower engine with an efficiency of 0.17 rejects 5400 J of heat every sec. Find the magnitude of the work that the engine does in 1 second
You are with 11 other people on a boat at rest in frictionless water. The group's total mass is 858kg, How far does the boat move
A bicyclist starts at rest at the top of a 50.3m long hill. After a small push, he coasts speeding up with an acceleration of 3.43m/s2 due to the slope of the hill. What is the angular velocity of the bicycle tires at the bottom of the hill.
A computer disk is 8.0 centimeter in diameter. A reference dot on the edge of the disk is initially located at θ=45 degree. Find the speed of the reference dot at t = 1.0 sec
Air in a cylinder is compressed to one-tenth of its original volume without change in temperature. What happens to its pressure? Imagine now that a valve is opened in order to restore the initial pressure value. What percentage of the molecules..
A ten pound car wheel has a moment of inertia of 0.38 kg m2. What is the wheel's rotational kinetic energy
The driver of a car wishes to pass a truck that is traveling at a constant speed of 20.5m/s. What distance does the car travel during this time
A sled slides without friction down a small, ice covered hill. If the sled starts from rest at the top of the hill, its speed at the bottom are 7.50 m/s. On the second run the sled starts with a speed of 1.50m/s at the top. When it reaches the bottom..
Calculate the length of a pipe that has a fundamental frequency of 420 Hz
two flat 4.0 cm times 4.0 cm electrodes carrying equal but opposite charges are spaced 2.0 mm apart with their
a current of 10.7 a is applied to 1.25 l of a solution of 0.554 m hbr converting some of the h to h2 g which bubbles
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