___________ is an irregular galaxy that is passing close to the Milky Way and is expected to merge with the Milky Way in the future
a. The Andromeda galaxy
b. The Small Magellanic Cloud
c. M87
d. The Virgo cluster
e. The Whirlpool galaxy
B
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Uncertainty Principle Using Momentum and Position: If the maximum possible accuracy in measuring the velocity of a particle increases, the maximum possible accuracy in measuring its position will
A. increase. B. decrease. C. not be affected.
Have astronomers ever seen a gas cloud that looks like it contains planetary systems that are in the process of forming?
A) Yes, there are many such clouds, including the Orion Nebula. B) Yes, but only the original cloud that formed our own solar system. C) Yes, but only in distant galaxies, not in our own Milky Way. D) No, there is no evidence that any interstellar clouds are currently giving birth to stars.
Where do stars form in the galaxy today?
A.) No stars are forming in the galaxy today. B.) In the halo. C.) In the disk. D.) Only around the Sun. E.) B and C.
Write the equation of a wave, traveling along the +x axis with an amplitude of 0.02 m, a frequency of 440 Hz, and a speed of 330 m/sec
a. y = 0.02 sin [880?(x/330 ? t)] b. y = 0.02 cos [880? x/330 ? 440t] c. y = 0.02 sin [880?(x/330 + t)] d. y = 0.02 sin [2?(x/330 + 440t)] e. y = 0.02 cos [2?(x/330 + 440t)]