When light reflects from mirrors we see a ________ reflection.
Fill in the blank(s) with the appropriate word(s).
specular
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A 90-m-long high-voltage cable is suspended between two towers. The mass of the 90-m cable is 100 kg. If the tension in the cable is 25 000 N, what is the lowest frequency at which this cable can oscillate?
a. 0.83 Hz b. 1.00 Hz c. 1.7 Hz d. 2.00 Hz e. 3.3 Hz
Identify a true statement about asterisms and constellations
A) They are made up of stars that are not physically associated with one another. B) They are made up of stars that are of the same brightness. C) They are made up of stars that lie in different directions when viewed from Earth. D) They are made up of stars that do not move through space in different directions.
The jovian planets:
A) all lie less than 5 AU from the Sun. B) all have rings around their equators. C) all spin slower than the Earth. D) have satellite systems with less than 4 moons. E) are all much more dense than any of the terrestrials planets.
In the U.S., AC line voltage oscillates at a frequency of __________
Fill in the blank(s) with correct word