One U.S. fluid gallon contains a volume of 231 cubic inches. How many liters of gasoline would you have to buy in Canada to fill a 14-gallon tank? (Note: 1L = 10+3 cm3.)

a. 53
b. 21
c. 14
d. 8.0
e. 4.0


A

Physics & Space Science

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Intensity: Calculate the light intensity 1.45 m from a light bulb that radiates 100 W equally in all directions.

A. 3.78 W/m2 B. 4.36 W/m2 C. 47.6 W/m2 D. 54.7 W/m2

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The measured value of the speed of light is about 300,000 km/s. Suppose a futuristic space train is traveling at 200,000 km/s with its headlights on. If you could measure the speed of the light from the headlights, you would find it to be

A) 200,000 km/s. B) 100,000 km/s. C) 300,000 km/s. D) 500,000 km/s.

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Which one of the following is the correct expression of the cutoff frequency of the metal in terms of its work function?

A) fo = Wo/h B) fo = Wo/c C) fo = c/Wo D) fo = h/Wo E) None of the other choices is correct.

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If two adjacent frequencies of an organ pipe closed at one end are 500 Hz and 700 Hz, what is the length of the organ pipe? (vsound = 340 m/s)

a. 0.85 m c. 1.50 m b. 1.25 m d. 1.70 m

Physics & Space Science