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A 89.3 kg fullback running east with a speed of 4.92 m/s is tackled by a 94.8 kg opponent running north with a speed of 2.93 m/s.
(a) If the collision is perfectly inelastic, calculate the speed and direction of the players just after the tackle.(b) Determine the energy lost as a result of the collision.
A 1000-kilogram race car is traveling at 60 m/s around a curved section of track that has a radius of 300 m. What is the centripetal force that acts on the car
Large fossil fuel or nuclear electrical power plants operate most economically when run at full capacity 24 hours a day. Excess electrical energy can be "stored" and recovered by pumping water into a reservoir on top of a mountain and letting it fall..
while a system is taken from state a to state b in the figure below the path acb, 84.0 of heat flows into the system and 57.0 of work is done by the system.
In this section assume the temperature is 20unless directed otherwise. A submarine 79 deep emits a sonar (sound) wave. How deep is the ocean at that point
Newton's law of gravity states that the force on an object by the Earth follows an inverse square law: 0 2 E g m m F G x ? ? where G is a constant (the universal gravitational constant), How much work is done moving the object from x ? ? to x ? R
Dolphins and other sea creatures can leap to great heights by swimming straight up and exiting the water at a high speed. What is the force of the water on the dolphin as it is coming to rest
four charges q=4nC form a square, 20 cm on a side. what is the potential of electric field at the center of the square
A human eyeball is about 2.0 cm long, and the pupil has amaximum diameter of about 8.0 mm. What is the "speed" of this lens
what the torque increase or decrease as the angle increase. Calculate the magnitude of the torque.
It position is xo>0 and i give it a kick so that it moves back towards the origin and executed simple harmonic motion with amplitude 2xo. Find out its position as a fuction of time in the forum of x(t)=acos(wt-&)
question a diver pushes off horizontally from the top of a vertical cliff that is 40.0 m high from water surface below.
Two parallel conductors carrying current in the same direction attract each other. If they are permitted to move toward each other, the forces of attraction do work. Where does the energy come from? Does this contradict the assertion in that magne..
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