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On a frozen pond, a 9 kg sled is given a kick that imparts to it an initial speed of v0 = 2.5 m/s. The coefficient of kinetic friction between sled and ice is µk = 0.10. Use the work-energy theorem to find the distance the sled moves before coming to rest.
A 1051 kg coasts down a hill 40 m high with its engine off and the driver's foot pressing the brake pedal. How much energy was converted into heat on the way down
A rock is tossed straight up with a velocity of 23 m/s When it returns, it falls into a hole 10m deep, What is the rock's velocity as it hits the bottom of the hole
An archer pulls her bowstring back 0.388 m by exerting a force that increases uniformly from zero to 229 N. What is the equivalent spring constant of the bow
A proton is fired directly into a uniform electric field that is able to bring the charge momen- tarily to rest. How much work does the electric field do in stopping the proton
A rock is released from rest into water. The magnitude of Fd of the drag force acting on the rock due to its motion through water can be modeled as Fd = Cd(v), where v is the speed of the rock and Cd is the constant drag coefficient. Determine the..
What is the magnitude of the electrostatic force the molecule exerts on it?
q1. suppose a small metal ball of mass and negative charge. the ball is released from rest at the point and constrained
An engineer has designed a machine to produce electricity by using the difference in the temperature of ocean water at different depths. what is the maximum efficiency of this machine
Geothermal heat is having another "revival". Explain how it works in a home and how much it would cost to add this to your home (determine your square footage or use an average 2000 square foot home), How many panels (size?) would you need
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons, How many electrons are there in 1.79 liters of water
A crankshaft with a diameter of 3.0 cm, rotating at 2900rpm comes to a halt in 1.20s. How many revolutions does the crankshaft make as it stops
Suppose that the mass of the dishwater is large as much as necessary so that its temperature does not change appreciably.
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