A certain electromagnetic field traveling in vacuum has a maximum electric field of 1200 V/m. What is the maximum magnetic field of this wave? (c = 3.0 × 108 m/s)
A) 8.7 × 10-6 T B) 3.4 × 10-4 T C) 2.2 × 10-5 T D) 4.0 × 10-6 T E) 9.6 × 10-6 T
D
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The distance between adjacent peaks of an electromagnetic wave is referred to as its
A) speed B) frequency C) energy D) wavelength
If a freely falling object were equipped with a speedometer on a planet where the acceleration due to gravity is 20 m/s2, then its speed reading would increase each second by
A) 10 m/s. B) 20 m/s. C) 30 m/s. D) 40 m/s. E) depends on its initial speed
If you know the impulse that has acted on a body of mass m you can calculate
a. its initial velocity. b. its final velocity. c. its final momentum. d. the change in its velocity. e. its acceleration during the impulse.
Which of the following is true of atoms in the Universe?
A) Most of the iron in your body was produced by nuclear fission reactions. B) Most of the calcium atoms in your bones were not assembled inside stars. C) The iodine atoms were not formed during the violent deaths of rare massive stars. D) The gold and silver atoms were created in a few moments during supernova explosions.