What is the resistance of a 0.100-kW light bulb designed to be used in a 120-V circuit dc?
A) 12.0 ? B) 144 ? C) 0.83 ? D) 1.2 ?
B
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Two objects are in circular orbits of different radii around the Sun. Which object has the lowest orbital speed?
a. The one closest to the Sun. b. The one farthest from the Sun. c. Once in orbit around the Sun, all objects have the same orbital speed regardless of distance from the Sun. It is the greater radius and greater resulting circumference that causes the object farther from the Sun to take longer to complete an orbit. d. This cannot be found without knowing the relative masses of the objects.
The figure shows the graph of 
versus time for an object moving along the x-axis. Solve graphically for the distance traveled from t = 9.0 s to t = 13.0 s.
A. 60 m
B. 84 m
C. 76 m
D. 80 m
Sirius is a binary star, consisting of Sirius A and Sirius B. Sirius B is a
a. red giant. b. white dwarf. c. planetary nebula. d. neutron star.
A metal blade spins at a constant rate of 5.0 revolutions per second about a pivot through one end of the blade. This rotation occurs in a region where the component of the earth's magnetic field perpendicular to the blade is 30 ?T. If the blade is 60 cm in length, what is the magnitude of the potential difference between its ends?
a. 0.24 mV b. 0.20 mV c. 0.17 mV d. 0.27 mV e. 0.34 mV