If we could observe a spacecraft actually traveling past us at the speed of light, we would measure its mass to be

A) zero
B) slightly greater
C) infinite
D) the same as at rest


C

Physics & Space Science

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What will be an ideal response?

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A pole-vaulter holds out a 5.5kg, 4.75m pole horizontally in front of him. Assuming the pole is uniform in construction, and that he holds the pole with one hand at the very end, and one hand 0.75m from the end, what is the torque applied by the Earth to the pole?

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A(n) ______________ consists of many narrow parallel slits very close together

Fill in the blank(s) with correct word

Physics & Space Science