A spaceship moving past the Earth with a speed of 0.800c signals to the Earth with pulsed laser photons emitted at 10.0-second intervals according to the spaceship's clock. According to observers on Earth who see the flashes, the time interval they measure is
a. 13.4 s
b. 16.7 s
c. 12.5 s
d. 9.70 s
e. 6.03 s
b
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An electron has an initial velocity to the south but is observed to curve upward as the result of a magnetic field. This magnetic field must have a component
A) to the west. B) to the east. C) upward. D) downward. E) to the north.
Give three examples of three-dimensional waves
What will be an ideal response?
Constructive interference is a result of two waves arriving at a point ________.
Fill in the blank(s) with the appropriate word(s).
Tuning forks #1, #2, and #3 each have slightly different frequencies.When #1 and #2 are sounded together, a beat frequency of 3 Hz results. When #2 and #3 are sounded together, a beat frequency of 5 Hz results. If the frequency of #1 is 100 Hz, which of the following cannot be the frequency of #3?
a. 92 Hz b. 95 Hz c. 98 Hz d. 102 Hz e. 108 Hz