What sound level change corresponds to a factor of two change in intensity?
a. 0.2 dB
b. 2.0 dB
c. 3.0 dB
d. 11 dB
e. 20 dB
c
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Which radiation has no association with electric charge?
A) alpha B) beta C) gamma D) all of the above E) none of the above
The magnitude of the magnetic field at point P for a certain electromagnetic wave is 2.12 ?T. What is the magnitude of the electric field for that wave at P? (c = 3.0 × 108 m/s)
A) 745 N/C B) 636 N/C C) 5.23 µN/C D) 7.45 µN/C E) 6.36 µN/C
A 70.0-kg man jumps 1.00 m down onto a concrete walkway. His downward motion stops in 0.04 seconds. If he forgets to bend his knees, what force is transmitted to his leg bones?
a. 700 N c. 8000 N b. 4000 N d. 16,000 N
Which of the following does the intensity of synchrotron radiation NOT depend on?
A) mass of the electron B) temperature C) speed of electrons D) frequency of radiation E) strength of the magnetic field