Mass on a Spring: An object is attached to a vertical spring and bobs up and down between points A and B. Where is the object located when its elastic potential energy is a maximum?

A. at either A or B
B. midway between A and B
C. one-third of the way between A and B
D. one-fourth of the way between A and B
E. at none of these points


Answer: A

Physics & Space Science

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A film of index of refraction n1 coats a surface with index of refraction n2. When n1

A.

.

B.
.

C.
.

D.
.

E.
.

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At what angle is the Sun above the horizon if its light is found to be completely polarized when it is reflected from the top surface of a slab of glass (n = 1.48)?

a. 34.0° b. 56.0° c. 0.594° d. 42.5° e. 47.5°

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Consider a particle composed of quarks. (a) The negative pion is composed of what combination of up and down quarks? (b) Is the negative pion a baryon or meson? (c) Is the negative pion a lepton or a hadron?

What will be an ideal response?

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