Which of the following can change the frequency of a wave?
a. interference
b. the Doppler effect
c. diffraction
d. all of the above
B
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A single thin slit forms a diffraction pattern, with the first minimum at an angle of 40.0° from central maximum
If monochromatic light of 530.0-nm wavelength is used for the illumination, what is the width of the slit? A) 825 nm B) 791 nm C) 757 nm D) 723 nm E) 689 nm
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An organ pipe open at both ends has a length of 0.80 m. If the velocity of sound in air is what is the frequency of the second harmonic of this pipe?
A) 638 Hz B) 425 Hz C) 213 Hz D) 850 Hz
A 15-?F capacitor and a 30-?F capacitor are connected in series, and charged to a potential difference of 50 V. What is the resulting charge on the 30-?F capacitor?
a. 0.70 mC b. 0.80 mC c. 0.50 mC d. 0.60 mC e. 0.40 mC