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

Physics & Space Science

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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

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Which of the following is the symbol for an alkali metal?

a. Al b. Cl c. K d. Ca

Physics & Space Science

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

Physics & Space Science

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

Physics & Space Science