Triple the mass of the bob on a simple pendulum will cause a change in the frequency of the pendulum swing by what factor?
a. 1/3
b. 1
c. 32
d. 3
e. 1/32
b
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The Search for Extraterrestrial Intelligence (SETI) program currently involves
A) broadcasting signals for other advanced civilizations to receive B) listening for signals broadcast by advanced civilizations C) searching for life on planets around other stars D) searching for life in our solar system
If the Earth were to be moved to where Venus is today,
A) the oceans would evaporate, blocking light from the Sun and causing global temperatures to fall B) carbon dioxide would be released from the oceans leading to higher temperatures but liquid water could still exist on the surface C) the oceans would evaporate slightly producing a slightly warmer, more humid planet D) the oceans would evaporate and carbonate rocks would decompose producing a runaway greenhouse effect much more severe than the one that exists on Venus today
Stars within an emission nebula, such as M42, are considered Population I stars
Indicate whether the statement is true or false
According to the theory that active galactic nuclei are powered by supermassive black holes, the high luminosity of an active galactic nucleus primarily consists of ________
A) intense radiation emitted by the black hole itself B) light emitted by hot gas in an accretion disk that swirls around the black hole C) the combined light of thousands of young, high-mass stars that orbit the black hole D) radio waves emitted from radio lobes found on either side of the galaxy we see in visible light