Monochromatic light of wavelength 500 nm is incident normally on a diffraction grating. If the third-order maximum of the diffraction pattern is observed at 32.0° from the central spot, how many TOTAL number of maxima can be seen?
A) 5
B) 7
C) 10
D) 11
E) 13
Answer: D
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A uniform rod (mass m = 1.0 kg and length L = 2.0 m) pivoted at one end oscillates in a vertical plane as shown below. The period of oscillation (in s) is approximately
?
?
A. 4.0. B. 1.6. C. 3.2. D. 2.3. E. 2.0.
Fourier analysis makes central use of
A) wave superposition. B) partial tones. C) harmonics. D) none of the above
A coconut and a bird's feather fall from a tree through the air to the ground below. The force of air resistance is
A) greater on the coconut. B) greater on the feather. C) the same on each.
A radio wave transmits 1.59 W/m2 average power per unit area. What is the peak value of the associated magnetic field? (?0 = 4? × 10^?7 T?m/A and c = 3.00 × 10^8 m/s)
a. 1.33E–14 T b. 3.46E+1 T c. 1.15E–7 T d. 7.28E–5 T e. 8.16E–8 T