A proton is moving at a speed of 3.2 × 106 m/s at an angle of 80° to a uniform magnetic field of strength 1.5 × 10-4 T
What is the distance moved by the proton along the spiral path as it completes one revolution? (This distance is called the "pitch" of the helix.) A)
1370 m
B)
1390 m
C)
240 m
D)
220 m
E)
cannot be determined
C
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When light is refracted, there is a change in its
A) frequency. B) wavelength. C) both of these D) neither of these
Determine the energy stored in C2 when C1 = 15 ?F, C2 = 10 ?F, C3 = 20 ?F, and V0 = 18 V.
A. 0.72 mJ B. 0.32 mJ C. 0.50 mJ D. 0.18 mJ E. 1.60 mJ
In projectile motion the horizontal component of the velocity at the top of the trajectory is
A. non-zero, and less than the initial horizontal component of the velocity. B. non-zero, and equal to the initial horizontal component of the velocity C. zero D. non-zero, and greater than the initial horizontal component of the velocity
A suitcase is sitting on a horizontal conveyor belt, which is moving at speed v. The work done by the frictional force on the suitcase is a. positive
b. negative. c. zero. d. impossible to determine without knowing the mass of the suitcase.