What is an asterism?
a. A legend or folklore association to a grouping of stars
b. Less formally defined group of stars outside the official 88 constellations
c. The council of astronomers who defined the 88 constellations
d. The northern pivot point of the celestial sphere
e. Constellations close enough to a celestial pole that they do not appear to rise from the east and set in the west
b
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Consider an experiment where we send monochromatic light to a distant screen through a single narrow slit. The distance between adjacent dark fringes in the diffraction pattern displayed on the screen (A) increases, (B) decreases, or (C) remains the same if, The intensity of the light increases
A. Increases B. Decreases C. Remains the same
A child moving at constant velocity carries a 2 N ice-cream cone 1 m across a level surface. What is the net work done on the ice-cream cone?
a. 0 J b. 0.5 J c. 2 J d. 20 J
By how many newtons does the weight of a 100-kg person decrease when he goes from sea level to mountain top at an altitude of 5000 m? The mean radius of the earth is 6.38 × 106 m
A) 2.6 N B) 1.5 N C) 3.6 N D) 9.8 N E) 0.60 N
Two charges lie on the x axis, +2q at the origin, and ?3q at x = 5.0 m. The point on the x axis where the electric potential has a zero value (when the value at infinity is also zero) is
a. 1.0 m. b. 2.0 m. c. 2.5 m. d. 3.0 m. e. 4.0 m.