Terrestrial planets, like Earth, are made up of rock and metal

a. True
b. False
Indicate whether the statement is true or false


True

Physics & Space Science

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A converging lens with the same curvature on both sides and focal length 25. cm is to be made from crown glass (n = 1.52). What radius of curvature is required for each face?

What will be an ideal response?

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Hardness is a measure of a material’s resistance to mechanical ______________.

Fill in the blank(s) with the appropriate word(s).

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Earth's magnetic field

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What is the evidence that gamma-ray bursts originate from beyond the Milky Way Galaxy?

What will be an ideal response?

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