Force on a Moving Charge: A charged particle that is moving in a static uniform magnetic field
A. will always experience a magnetic force, regardless of its direction of motion.
B. may experience a magnetic force which will cause its speed to change.
C. may experience a magnetic force, but its speed will not change.
D. may experience a magnetic force, but its direction of motion will not change.
E. None of these statements are true.
Answer: C
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A tractor T is pulling a trailer M with a constant velocity. If the velocity is 20 m/s and M = 200 kg and T = 500 kg, then the force on the trailer due to the tractor is
A. 600 N forward.
B. 450 N backward.
C. 200 N backward.
D. 35 N forward.
E. 0.
A hammer hits a nail. The force of the nail on the hammer is
A. greater than the force of the hammer on the nail B. less than the force of the hammer on the nail C. equal to the force of the hammer on the nail D. zero
According to the special theory of relativity, while traveling at very high speed your pulse rate
A) increases. B) decreases. C) remains unchanged.
If the z-component of the magnetic field of an electromagnetic wave traveling in the +x direction through vacuum obeys the equation
Bz(x, t) = (1.25 ?T) cos[(3800 m-1)x - (1.14 × 10-12 rad/s)t], what is the largest that the y component of the electric field can be? (c = 3.0 × 108 m/s) A) 375 N/C B) 4.17 × 10-15 N/C C) 3.75 × 108 N/C D) 4.17 × 10-9 N/C E) 1.25 × 106 N/C