Suppose object A and object B are separated by distance, d, with gravitational force. F, between them. If object B is replaced by object C, which has three times the mass how
does the new gravitational force between objects A and C compare to the gravitational force between objects A and B?
A.)the new gravitational force is doubled that of the original
B.)the new gravitational force is one ninth that of the original
C.)the new gravitational force is tripled that of the original
D.)the new gravitational force is half that of the original
Answers: 3
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Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.
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Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)
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The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.
Answers: 3
Suppose object A and object B are separated by distance, d, with gravitational force. F, between the...
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