Where does most star formation occur in the Milky Way Galaxy?
A) in the spiral arms
B) everywhere throughout the galactic disk
C) in the central bulge
D) within the halo
A) in the spiral arms
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The main reason you can walk barefoot on red-hot coals of wood without burning your feet involves
A) low temperature of the coals. B) low conductivity of the coals. C) mind over matter techniques.
Magnetic confinement is used in controlled fusion experiments to control a plasma
a. True b. False Indicate whether the statement is true or false
Energy in Capacitors: An ideal parallel-plate capacitor consists of two parallel plates of area A separated by a distance d. This capacitor is connected to a battery that maintains a constant potential difference across the plates. If the separation between the plates is now doubled, the amount of electrical energy stored on the capacitor will
A. double. B. quadruple. C. be cut in half. D. be cut in fourth. E. not change.
A wire (mass = 50 g, length = 40 cm) is suspended horizontally by two vertical wires which conduct a current I = 8.0 A, as shown in the figure. The magnetic field in the region is into the paper and has a magnitude of 60 mT. What is the tension in either wire?
A. 0.15 N B. 0.68 N C. 0.30 N D. 0.34 N E. 0.10 N