Which of the following describes an experiment that demonstrates that light is a wave?
A) If you let light pass through a narrow "slit" formed by your fingers, you can detect the energy transfer as the light passes through your fingers.
B) If you let light pass through a narrow "slit" formed by your fingers, you can see an interference pattern.
C) If you allow light from a transparency projector to hit a small container full of water placed in front of the projector, you can detect an energy transfer as the light enters the water.
D) a mystical experiment in which the instructor pulls a cosmic toad out of a baseball cap.
E) If you allow light from a transparency projector to hit a small container full of water placed in front of the projector, you can see an interference pattern in the water.
B
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Two strings on a violin are stretched between two points 20.0 cm apart. The mass per length of the strings are the same. If the ratio of the frequencies of the fundamental modes is 1.5 to 1.0, then what is the ratio of the tensions in the strings?
A. 1.75 B. 1.88 C. 1.00 D. 1.25 E. 1.50
When heat and pressure are applied to an igneous rock it turns into
A) another sedimentary rock B) an igneous rock C) a meteorite D) a metamorphic rock
The position of an air-track cart that is oscillating on a spring is given by x = (12.4 cm) cos[(6.35s-1)t]. At what value of t after t = 0 s is the cart first located at x = 8.47 cm?
A) 4.34 s B) 0.108 s C) 0.129 s D) 7.39 s E) 7.75 s
What is the kinetic energy of a 5,000 kg truck traveling at 25 m/s?