What is the length of a simple pendulum with a period of 2.0 s?
A) 20 m
B) 0.99 m
C) 1.2 m
D) 1.6 m
E) 0.87 m
B
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A vector starts at coordinate (3.0, 4.0) and ends at coordinate (?2.0, 16.0). What are the magnitude and direction of this vector?
What will be an ideal response?
Of all the various .TYPEs of scientific measurements that are possible to make, which type of scientific measurement has given us the most information about the physical universe?
A) Spatial measurements, i.e., measurements of distance, area, and volume. B) Spectroscopy, i.e., measurements of spectra. C) Measurements of mass and weight. D) Energetics, i.e., measurements of the total energy produced by various physical processes. E) Thermometry i.e., measurements of temperature.
Why does a golf ball hit on the Moon travel farther than one hit on Earth? (Neglect air resistance and bad golfers.)
A. The Moon is physically smaller than Earth, so the golf ball only looks like it travels farther. B. The mass of the ball is lower on the Moon, so it is accelerated more easily there. C. The surface gravity is lower on the Moon, so the golf club can be accelerated more easily there. D. The surface gravity is lower on the Moon, so the acceleration of gravity is lower.
A ray of light, which is traveling in a vacuum, is incident on a glass plate (n = ng). For increasing angles of incidence, the angle of refraction
A) increases, approaching the limiting value of 90°. B) decreases, approaching the limiting value of zero degrees. C) increases, approaching the limiting value of sin-1 (1/ng) degrees. D) increases, approaching the limiting value of sin-1 (ng) degrees.