Acrobat Bart at the circus drops vertically onto the end of a see-saw, with his partner Art equidistant from the fulcrum at the other end. Art is propelled straight upward a distance twice that of Bart's dropping distance. Neglecting inefficiencies we see
A) the masses of Art and Bart are equal.
B) Art has half the mass of Bart.
C) need more information
Answer: B
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The angle of rotation between the ends of a nylon bar is 3.58. The bar diameter is 70 mm and the allowable shear strain is 0.014 rad. The minimum permissible length of the bar is approximately:
(A) 0.15 m
(B) 0.27 m
(C) 0.40 m
(D) 0.55 m
In video 1 for Chapter 17, how does the fringe spacing change when the distance between the slits, d, is increased?
A. The fringes get farther apart. B. The fringe spacing stays the same. C. The fringes get closer together. D. It depends on how wide the slits are.
You hold one end of a solid rod in a fire, and the other end becomes hot. This is an example of __________
Fill in the blank(s) with correct word
Of the terrestrial planets, Mars seems to most promising to exobiologists
Indicate whether the statement is true or false