What is the period of a wave described by the following function: y(x,t) = (2.00 m)cos[(3.00 m-1)x + (5.00 s-1)t]
A)
0.333 s
B)
0.200 s
C)
5.00 s
D)
1.26 s
E)
2.09 s
D
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Which of the following sequences of electromagnetic radiation is arranged in the order of increasing energy?
A) Gamma rays, X-rays, infrared radiation, and radio waves B) Radio waves, microwaves, gamma rays, and ultraviolet radiation C) Visible light, ultraviolet radiation, X-rays, and gamma rays D) Visible light, microwaves, radio waves, and infrared radiation
Einstein's general theory of relativity suggests that gravity is
A) a force of attraction that acts at a distance between two masses. B) caused by curvature of spacetime. C) = G × M1 × M2/d2. D) one of four fundamental forces in nature.
The International Space Station is orbiting at an altitude of about 370 km above the earth's surface. The mass of the earth is 5.976 × 1024 kg and the radius of the earth is 6.378 × 106 m
(a) Assuming a circular orbit, what is the period of the International Space Station's orbit? (b) Assuming a circular orbit, what is the speed of the International Space Station in its orbit?
The Milky Way galaxy is about
A) 4 light years in diameter. B) 40 light years in diameter. C) 100 light years in diameter. D) 100,000 light years in diameter.