In a two-slit experiment, monochromatic coherent light of wavelength 600 nm passes through a pair of slits separated by 2.20 x m. At what angle away from the centerline does the first bright fringe occur?

A) 1.56°
B) 2.22°
C) 3.12°
D) 4.70°
E) 6.24°


A

Physics & Space Science

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Moving at a constant speed, an elevator lifts a 1000 N package 10 meters in 3 seconds. During this time, the impulse delivered to the package by the elevator floor is

A. 10,000 Ns up. B. 10,000 Nm up. C. 3,000 Ns up. D. zero.

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A motorist travels for 3.0 h at 80 km/h and 2.0 h at 100 km/h. What is her average speed for the trip?

A) 92 km/h B) 90 km/h C) 85 km/h D) 88 km/h

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Ideal Gas Law: Consider two equal-volume flasks of gas at the same temperature and pressure. One gas, oxygen, has a molecular mass of 32. The other gas, nitrogen, has a molecular mass of 28. What is the ratio of the number of oxygen molecules to the number of nitrogen molecules in these flasks?

A.
B.
C.
D.
E.

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Gravity lensing lets us map the distribution of both visible and dark matter

Indicate whether the statement is true or false

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