A single slit forms a diffraction pattern, with the first minimum at an angle of 40° from central maximum. Monochromatic light of 410 nm wavelength is used
The same slit, illuminated by a different monochromatic light source, produces a diffraction pattern with the second minimum at a 60° angle from the central maximum. The wavelength of this light, in nm, is closest to: A) 276
B) 293
C) 309
D) 326
E) 342
A
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A series circuit consists of a 100-V DC power source, a 100-? resistor, and a variable resistor of resistance R, which varies from 0 to 100 ?. The current in the circuit is
?
?
A. directly proportional to R. B. inversely proportional to R. C. directly proportional to (100 ? + R). D. inversely proportional to (100 ? + R). E. neither directly nor inversely proportional to R or to (100 ? + R).
Imagine a group of people standing in a circle. There are two ways that they can create a “wave”. One way is by placing the palms of their hands together. One person begins by pushing on the adjacent person's palm who, in turn, pushes on the next person's palm, etc. Another way is by adjacent people holding hands. One person lifts the other person's hand and then that person lifts the next
person's hand, etc. Which types of waves are represented by each case? 1.Both cases represent longitudinal waves. 2.The first case represents a transverse wave and the second case represents a longitudinal wave. 3.Both cases represent transverse waves. 4.The first case represents a longitudinal wave and the second case represents a transverse wave.
An alpha particle is moving at a speed of 5.0 × 105 m/s in a direction perpendicular to a uniform magnetic field of strength 0.040 T. The charge on an alpha particle is 3.2 × 10-19 C and its mass is 6.6 × 10-27 kg
(a) What is the radius of the path of the alpha particle? (b) How long does it take the alpha particle to make one complete revolution around its path?
A neutral hollow spherical conducting shell of inner radius 1.00 cm and outer radius 3.00 cm has a +2.00-µC point charge placed at its center. Find the surface charge density
(a) on the inner surface of the shell. (b) on the outer surface of the shell.