The earth’s rotation (A) increases, (B) decreases, or (C) does not affect its gravitational binding energy.
A. increases
B. decreases
C. does not affect its gravitational binding energy
B. decreases
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RMS and Peak Quantities: A 100-W light bulb is powered by 120 V ac 60.0-Hz household connection. Determine the rms current and the current amplitude.
What will be an ideal response?
A star enters the main sequence when ________.
A. it forms planets B. nuclear fuel in its core can supply enough energy to stop its collapse C. it collapses, and its envelope becomes degenerate D. it stops fusing nuclear fuel in its core and starts to expand
What two energy transport mechanisms, in order from outside the core to the surface, are found in the Sun?
A) convection, conduction B) radiative diffusion, convection C) conduction, radiative diffusion D) radiative diffusion, conduction E) conduction, convection
The oldest rocks found on the Earth's surface date back about ________ billion years
A) one B) two C) three D) four E) four and a half