In the development of a terrestrial planet, the stage of ___________ when dense material settled to the core and less dense to the outer parts
a. differentiation
b. cratering
c. glaciation
d. accretion
e. flooding
a
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Most of Jupiter's volume is probably in the form of liquid metallic helium
Indicate whether the statement is true or false
Which of the following is the symbol for an alkali metal?
a. Al b. Cl c. K d. Ca
Al the astronaut has a weight of 800 N when he is standing on the surface of Earth. What is the force of gravity acting on him when he is in a space station orbiting Earth at a distance of three Earth radii above the surface?
A. 800 N B. 200 N C. 100 N D. 50 N
Tuning forks #1, #2, and #3 each have slightly different frequencies.When #1 and #2 are sounded together, a beat frequency of 3 Hz results. When #2 and #3 are sounded together, a beat frequency of 5 Hz results. If the frequency of #1 is 100 Hz, which of the following cannot be the frequency of #3?
a. 92 Hz b. 95 Hz c. 98 Hz d. 102 Hz e. 108 Hz