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A train is traveling up a 3.2° incline at a speed of 3.60m/s when the last car breaks free and begins to coast. How long does it take for the last car to come to rest?
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A charged conducting sphere of radius 18 cm has 1012 electrons removed from its surface. What is the surface charge density of the sphere
How many drops of water are in all the oceans on earth? Assume that contains 25 drops of water. Remember that this is an order-of-magnitude problem, so you should expect that you will only find rough estimates for the numbers you require.
Steam can cause more serious burns than water at the same temperature. Here we want to examine this effect quantitatively, noting that flesh becomes badly damaged when its temperature reaches 50.0 oC.
if ellis is on earth, mario is on mars and monique is on the moon. they all have a mass of 50kg. they all jump off a trampoline. who will jump the highest. find what is the Tension T2 in the left.
A molecule of DNA (deoxyribonucleic acid) is 2.05 µm long. The ends of the molecule become singly ionized: negative on one end, positive on the other. The helical molecule acts like a spring and compresses 0.88% upon becoming charged. Determine th..
Two conductors are made of the same material and have the same length. Conductor A is a solid wire of diameter 1.0 mm. Conductor B is a hollow tube of outside diameter 4.1 mm and inside diameter 3.1 mm. What is the resistance ratio RA/RB , measured b..
A fuel tank explodes, ripping the container into two pieces of masses 30 kg and 11 kg, What was the energy released by the explosion
Given a system composed of three bowling balls (6.52 kg each) one sliding east at a velocity of 20m/second the second sliding north with a velocity of 35 m/sec, find the total momentum of the system
A basketball player is standing on the floor 10.0 m from the basket, What is the acceleration of the basketball at the highest point in its trajectory
A 599 Hz sound wave travels through a substance. What is the speed of sound in the substance
A 60g ball of clay is thrown horizontally at 10m/s toward a 1.8kg block sitting at rest on a frictionless hi surface. The clay hits and sticks to the block. What impulse does the block exert on the clay
An athlete at the gym holds a 1.2 kg steel ball in his hand. His arm is 64 cm long and has a mass of 4.0 kg. Evaluate the magnitude of the torque about his shoulder if he holds his arm straight, but 30 degrees below horizontal?
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