When a wave travels through a material, how do the two interact? image:
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a. the wave only carries energy through space.
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b. neither the material nor the energy is carried with the wave.
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c. the wave carries both the material and energy through space.
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d. the wave carries the material through space.
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If you wanted to move an electron from the positive to the negative terminal of the battery, how much work w would you need to do on the electron? enter your answer numerically in joules.

Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. the first has a mass of 2.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. assume that the positive direction is directed from the second satellite towards the first satellite. (a) calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest.(b) what is the loss of kinetic energy in this inelastic collision? (c) repeat both parts, in the frame of reference in which the second satellite was originally at rest. final velocity(d) loss of kinetic energy = ?

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?