How does gravitational energy depend on the height, h, of an object?
A. mh^2
B. mh
C. mgh^2
D. mgh
Ans: D. mgh
Physics & Space Science
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A particular object appears to be red. The reason it appears red is:
1.It absorbs only red frequencies as they hit. 2.It reflects only red frequencies as they hit. 3.It absorbs red frequencies more than other frequencies. 4.It reflects red frequencies more than other frequencies. 5.It emits red frequencies more than other frequencies. 6.Not enough information.
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Define mechanical work
What will be an ideal response?
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Calculate the energy En (in eV) of a hydrogen atom's electron with n = 4
a. –54 eV b. –3.4 eV c. –0.85 eV d. –1.7 eV
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