A nucleon has a mass of about
A) 1 amu.
B) 1 atomic mass unit.
C) both are the same.
D) none of the above
Answer: C
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Three resistors,
are connected in series to a 9.0 V battery. What is the power dissipated by 
A. 2.0 W B. 4.0 W C. 5.1 W D. 9.0 W E. 2.3 W
Force on a Moving Charge: A proton moving with a velocity of 4.0 × 104 m/s enters a magnetic field of 0.20 T. If the angle between the velocity of the proton and the direction of the magnetic field is 60°, what is the magnitude of the magnetic force on the proton? (e = 1.60 × 10-19 C)
A. 1.8 × 10-15 N B. 0.60 × 10-15 N C. 1.1 × 10-15 N D. 2.2 × 10-15 N E. 3.3 × 10-15 N
Two hypothetical discoveries in Part A deal with moons that, like Earth's moon, are relatively large compared to their planets. Which of the following best explains why finding 1 planet with such a moon is consistent with the nebular theory, while finding 6 planets with such moons is not consistent?
a. Unusually large moons form in giant impacts, which are relatively rare events. b. The nebular theory says that only planets at least as large as Earth can have large Moons, and 6 Earth-size planets would not be likely to form in one solar system. c. The nebular theory holds that moons of any size should be rare, so finding 1 is not too surprising but finding 6 would be very surprising.
The point P lies along the perpendicular bisector of the line connecting two long straight wires S and T perpendicular to the page. A set of directions A through H is shown next to the diagram. When the two equal currents in the wires are directed into the page, the direction of the magnetic field at P is closest to the direction of
a.
E.
b.
F.
c.
G.
d.
H.
e.
A.