The intensity of an electromagnetic wave is 8 × 107 W/m2. What is the amplitude of the magnetic field of this wave?
A)
8.2 × 10-4 T
B)
3.3 × 10-7 T
C)
10 T
D)
14 T
E)
5.8 × 10-4 T
A
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Angular and Linear Quantities: A wheel of diameter 0.70 m rolls on the floor without slipping. A point at the top of the wheel moves with a speed 2.0 m/s relative to the floor.(a) At what speed is the central axis of the wheel moving relative to the floor?(b) What is the angular speed of the wheel?
What will be an ideal response?
Where do most asteroids originate?
Where do most asteroids originate?
- Between Mars and Jupiter
- Between the moon and Mars
- From the Kuiper belt
Work is done on an object when
a. it moves in a circle at constant speed. b. it is accelerated in a straight line. c. it is carried horizontally at constant speed. d. all of the above