In a single-slit diffraction experiment, the width of the slit through which light passes is reduced. What happens to the central bright fringe?
A) It stays the same.
B) It becomes narrower.
C) It becomes wider.
D) We must know the wavelength of the light to answer.
C
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An athlete participates in a discus throw competition during an Olympiad that takes place in a city where acceleration due to gravity is 9.80 m/s2. He throws the discus with an initial velocity of 20.0 m/s at an angle of 30.0° above the horizontal
Neglecting the height of the discus at the point of release, what is the range of the discus? A) 35.3 m B) 20.4 m C) 40.0 m D) 60.0 m E) 50.0 m
How much power is being dissipated by one of the 10-? resistors?
a.
24 W
b.
9.6 W
c.
16 W
d.
6.4 W
The emission of longwave radiation by the atmosphere towards the Earth's surface is termed
What will be an ideal response?
A gas expands from an initial volume of 0.040 m3 to a final volume of 0.085 m3 while its pressure increases linearly with the volume (so that the process follows a straight-line path in a pV diagram) from 110 kPa to 225 kPa
How much work is done on the gas during this expansion? A) -5.2 kJ B) -7.5 kJ C) -7.8 kJ D) -11 kJ E) -12 kJ