In 2015, gravity waves were observed using which device?
a. The Large Hadron Collider
b. The Sudbury Graviton Observatory
c. The Laser Interferometer Gravitational-Wave Observatory
d. The Superconducting Super Collider
c
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If atmospheric refraction did not occur, how would the apparent time of sunrise and sunset be changed?
a. Both would be earlier. b. Both would be later. c. Sunrise would be earlier and sunset later. d. Sunrise would be later and sunset earlier.
Find the frequency of X-rays of wavelength 1 Å = 10-10 m
a. 3 × 10^18 Hz b. 3 × 10^10 MHz c. 6 × 10^9 Hz d. 3 × 10^8 Hz e. 3 × 10^20 Hz
An innovative physics professor conducts laboratory exercises in the college swimming pool. Suppose that one exercise was the measurement of the degree of polarization by bouncing laser light off a surface of a crystal. A laser bounced off the crystal surface is found to be perfectly polarized when the angle of incidence of the laser beam is 57 degrees from the vertical. What is the index of refraction of the crystal? It will help to recall that the index of refraction of water is 1.33.
A. 1.17 B. 1.12 C. 1.54 D. 2.05
What did Rutherford's famous scattering experiment help to prove in his day?