An electron, initially at rest, accelerates through a potential difference of 1 V, gaining kinetic energy KEe, while a proton, also initially at rest, accelerates through a potential difference of –1 V, gaining kinetic energy KEp, which of the following relationships holds?

1. KEe = KEp
2. KEe < KEp
3. KEe > KEp
4.The answer can’t be determined from the given information


1

Physics & Space Science

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The intensity of radiation reaching the earth from the sun is 1 350 W/m2 . The earth's radius is 6.4 × 10^6 m. How big a force does this radiation exert on the earth? (Assume it is all absorbed.)

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What will be an ideal response?

Physics & Space Science

Mild, short-term cooling periods during the Earth's history are known as

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Physics & Space Science