Question 1
Which one of the following cannot be a definition of an elastic modulus?
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Question 2
At the moment of a total eclipse, the moon lies along a line from the Earth to the sun. If your normal weight is 600 N, how much is your weight decreased by the combined pull of the sun and moon?
MSUN = 2.0 × 1030 kg, | rS-E = 1.5 × 108 km |
MMOON = 7.4 × 1022 kg, | rM-E = 3.8 × 105 km |