The intensity of radiation reaching the Earth from the Sun is 1350 W/m2. The Earth's radius is 6.4 × 106 m. How big a force does this radiation exert on the Earth? (Assume it is all absorbed.)
A. 5.8 × 108 N
B. 1.2 × 109 N
C. 2.3 × 109 N
D. 4.6 × 109 N
E. 1.7 × 1017 N
Answer: A
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A mass on a spring undergoes SHM. When the mass passes through the equilibrium position, which of the following statements about it are true? (There could be more than one correct choice.)
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