Conduction: If, with steady state heat flow established, you double the thickness of a wall built from solid uniform material, the rate of heat loss for a given temperature difference across the thickness will
A. become one-half its original value.
B. also double.
C. become one-fourth its original value.
D. become 1/ of its original value.
E. become four times its original value.
Answer: A
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An electron is fired through a pair of deflection plates, which produce a 2.00 cm long region with an electric field of 4000 N/C perpendicular to the electron's initial velocity. If the initial speed of the electron is what angle will its new velocity make with the direction of the original velocity?
A. 14
B. 8.0
C. 5.5
D. 4.6
D. 4.6
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A) absorbed. B) totally transmitted. C) partially reflected and partially transmitted. D) totally reflected. E) totally polarized.
A 4.00 kg mass is moving in a circular path of radius 4.10 m with a constant angular velocity of 5.00 rad/sec. The centripetal force on the mass is
A. 267 N. B. 294 N. C. 302 N. D. 350 N. E. 410 N.
If Venus had the same atmosphere as the Earth, it would
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