A rectangular loop of wire of width 10 cm and length 20 cm has a current of 2.5 A flowing through it
Two sides of the loop are oriented parallel to a uniform magnetic field of strength 0.037 T, the other two sides being perpendicular to the magnetic field. The magnitude of the torque on the loop is
A)
0.0093 m?N.
B)
0.025 m?N.
C)
0.050 m?N.
D)
0.0019 m?N.
E)
0.038 m?N.
D
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A) the Keck telescope, on Mauna Kea, Hawaii. B) the Arecibo radio telescope in Puerto Rico. C) the Hubble Space Telescope (which orbits Earth). D) the Juno spacecraft that is orbiting Jupiter.
Consider an atom of carbon in which the nucleus contains six protons and seven neutrons. What is its atomic number and atomic mass number?
A) atomic number = 6; atomic mass number = 13 B) atomic number = 6; atomic mass number = 7 C) atomic number = 13; atomic mass number = 6 D) atomic number = 7; atomic mass number = 13
Which is not a color?
A) yellow-green B) black C) both of these D) neither of these
A heater is rated at 1200 watts for a 120-volt source.If two heaters are connected in parallel across the 120-volt source, the total power drawn from the source is __________
Fill in the blank(s) with correct word