Physics, 18.03.2021 02:50 issaicnotisaac
How does electricity turn into light in a common lightbulb?
A. Electricity strikes the metal particles of the filament in a lightbulb. Some of the metal particles become gases and turn into light.
B. Electricity heats up the filament in the bulb to a very high temperature. At that temperature, the metal becomes bright and gives off light.
C. Electricity cools down the filament in the bulb to a very low temperature. At that temperature, the metal becomes bright and gives off light.
D. Electricity strikes the metal particles of the filament in a lightbulb. Some of the metal particles are ripped off from the metal and turn into light.
Answers: 1
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Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?
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Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?
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A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?
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Physics, 22.06.2019 16:30
One number is said to be an "order of magnitude" larger than another number if choose one: a. it is 10 times larger. b. it is 5 times larger. c. it is 3 times larger. d. it is 100 times larger. e. it is 2 times larger.
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How does electricity turn into light in a common lightbulb?
A. Electricity strikes the metal partic...
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