Three resistors,
are connected in series to a 9.0 V battery. What is the total power dissipated by the circuit?
A. 2.0 W
B. 4.0 W
C. 5.1 W
D. 9.0 W
E. 20 W
D. 9.0 W
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How many arcminutes are in 1°?
A) 60 B) 360 C) 3600 D) 100 E) 10,000
The speed of sound in the air inside a 0.640-m long gas column is 340 m/s. What is the fundamental resonant frequency of this air column if it is
(a) open at one end and closed at the other end? (b) open at both ends?
Which of the following is a contribution that Galileo made to astronomy?
A. He discovered four moons (or satellites) of Jupiter. B. He discovered epicycles. C. He determined the size of Earth. D. He developed the first successful heliocentric theory.
As material leaves an expanding star and begins to fall into a white dwarf close companion
a. an accretion disk will form around the white dwarf. b. the material will cool off because it begins to move at high velocities. c. the material will fall directly straight onto the surface of the white dwarf. d. the white dwarf will produce a protostar. e. the white dwarf's iron core will collapse.