A square loop of wire has a current going around it. The magnetic field from the current on each side of the loop results in a magnetic force on the wire on the opposite side. Each resulting magnetic force on the opposite side wire
a. pushes inward on the loop.
b. is actually zero since a current cannot push on itself.
c. depends on whether the current is clockwise of counterclockwise.
d. pushes outward on the loop.
D
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Which of the following was an important source of prebiotic molecules (e.g., amino acids) on the early Earth?
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A. 17 ?T B. 14 ?T C. 11 ?T D. 20 ?T E. 36 ?T
A CD player uses a laser whose light frequency is 3.85 × 10^14 Hz. Calculate the energy, in joules, of the photons