Vibrating air columns relate to which instrument?
A) guitar
B) harp
C) trumpet
D) all of the above
E) none of the above
Answer: C
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__________is one of the small bodies that formed from the solar nebula and eventually grew into protoplanets
A) A planetesimal B) The Oort cloud C) The Orion nebula D) A carbonaceous chondrite
In 1974, astronomers sent an anticoded message as a string of 1679 _______________ and _______________
Fill in the blank(s) with correct word
Snell's Law: A beam of light, traveling in air, strikes a plate of transparent material at an angle of incidence of 56.0°. It is observed that the reflected and refracted beams form an angle of 90.0°. What is the index of refraction of this material?
A. 1.40 B. 1.43 C. 1.44 D. 1.48
A blob of clay, mass M, is dropped onto a spring from a height h above the end of the spring. If the spring compresses an amount d as the blob comes to rest, what is the spring constant?
a. 
b. 
c. 
d. 