What is the value of pi?
Answer: 3.14
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You can use Spotify to embed or link to ______ media.
A. music B. photography C. video D. audio
Imagine we've discovered a planet orbiting another star at an average distance of 1 AU with an orbital period of 6 months. The planet has a moon that orbits the planet at the same distance as our Moon, but it takes 2 months to complete an orbit. What can we infer about this planet?
A) It is more massive than Earth. B) It is less massive than Earth. C) It has the same mass as Earth. D) We cannot answer the question without knowing the mass of the star. E) We cannot answer the question without knowing the mass of the moon.
Fluorescence is the decay of an excited state is less than _________ seconds with the emission of a photon.
Fill in the blank(s) with the appropriate word(s).
Two-Source Interference of Sound: Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated by a distance of 5.00 m. A person is standing 12.0 m away from the wall, equidistant from the loudspeakers. When the person moves 1.00 m parallel to the wall, she experiences destructive interference for the first time. What is the frequency of the sound? The speed of sound in air is 343 m/s.
A. 211 Hz B. 256 Hz C. 422 Hz D. 512 Hz E. 674 Hz