What action is responsible for the heating of Saturn's interior?
a. rapid rotation on its axis
b. zero inclination to its axis of rotation
c. convection currents of liquid hydrogen
d. falling droplets of helium releasing energy
e. rising magma from hot spots found on its surface
d
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Comet dust particles that later encounter Earth are seen as meteors
a. True b. False Indicate whether the statement is true or false
A one kilogram grapefruit weighs ten newtons. Suppose we take this grapefruit to the moon. The force of gravity on the grapefruit will then be
A) less than one kilogram. B) less than ten newtons. C) ten newtons. D) one kilogram. E) None of the above.
You wish to construct a simple ac generator with a maximum output of 12 V when rotated at 60 Hz. A magnetic field of 0.050 T is available. #If the area of the rotating coil is 100 cm2, how many turns are needed?
What will be an ideal response?
A particle is moving in a circular orbit about a fixed center of a two-dimensional harmonic oscillator. The ground-state (n = 1 ) energy is 1.0 eV. What is the energy of the second excited level (n = 3)?
A) 0.33 eV B) 3.0 eV C) 0.1 eV D) 9.0 eV E) 1.0 eV