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
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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. 
Gravity lensing lets us map the distribution of both visible and dark matter
Indicate whether the statement is true or false
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.
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