Which spacecraft was the first to photograph Uranus in 1986?
a. Hubble Space Telescope
b. Cassini-Huygens
c. Cassini-Huygens
d. Voyager 2
e. New Horizons
d
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A transverse periodic wave is represented by the equation y(x, t) = 2.50 cm cos(2,500 rad/s t - 15.0
x). What is the direction of the velocity of the wave?
A. the + z direction B. the + y direction C. the + x direction D. the - z direction E. the - y direction F. the - x direction
Momentum: A 0.330-kg volleyball is thrown vertically downward with a speed of 0.150 m/s in a place where g = 9.81 m/s2. It takes it 0.0655 s to reach the ground. What is the magnitude of its momentum just before it hits the ground?
A. 0.212 kg ? m/s B. 0.262 kg ? m/s C. 0.163 kg ? m/s D. 0.0216 kg ? m/s E. 0.0418 kg ? m/s
If you could manage to stand on the Sun, you would weigh approximately ________ times more than your weight on Earth.
A. 100 B. 10 C. 30 D. 300,000
The proper interpretation of the Hubble law (which relates the redshift of a galaxy to its distance) is that as time goes on, galaxies are____
a. staying relatively still in space while the space between the galaxies contracts b. moving away from a common center in space that is neither expanding nor contracting c. staying relatively still in space while the space between the galaxies expands d. moving away from a common center while the space between the galaxies expands e. moving toward a common center in space that is neither expanding nor contracting