The speed of light is equal to:
a. one light-year per year.
c. one meter per nanosecond. b. 5.28 × 10^7 miles per hour.
d. none of the above.
A
You might also like to view...
Power: The nichrome heating element in an electric drier operates on 240 V and generates heat at the rate of 2.0 kW. The heating element shorts out and, in repairing it, the repairman shortens the nichrome wire by 10%. (Assume the temperature is unchanged. In reality, the resistivity of the wire will depend on its temperature.) What effect will the repair have on the power dissipated in the heating element?
A. The power is still 2.0 kW. B. The power increases to 2.2 kW. C. The power decreases to 1.8 kW. D. None of the given answers is correct.
Galileo's observation of the satellites of Jupiter showed that ________.
A. the Moon was not a flawless sphere B. nothing orbited Earth C. there were objects that did not orbit Earth D. planets orbited the Sun E. None of these choices is correct.
Nuclear and fossil fuel generating plants differ in their need for a
A) smoke-stack. B) condenser. C) boiler. D) cooling lake or tower. E) All of the above.
A layer of water (n = 1.333) floats on carbon tetrachloride (n = 1.461) contained in an aquarium. To the nearest degree, what is the critical angle at the interface between the two liquids?
a. 88° b. 78° c. 66° d. 58° e. 43°