When a bar magnet is thrust into a coil of wire, a greater voltage is induced with
A) a greater number of loops in the coil.
B) faster thrusting motion.
C) a stronger bar magnet.
D) all of the above
Answer: D
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Approximately how long did the nucleosynthesis era last?
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The velocity of an object as a function of time is given by v(t) = -3.0 m/s - (2.0 m/s2 ) t + (1.0 m/s3 ) t2. Determine the instantaneous acceleration at time t = 2.00 s
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A mercury-in-glass thermometer reads 20ºC when hanging outside in the shade on a calm summer day. Another thermometer hangs in a sunny location and registers 45ºC. Assuming a convective heat transfer coefficient of 10 W/m^2? K and the emissivity is 0.2 for both thermometers, determine the effective surrounding surface temperature in the sun.
What will be an ideal response?
The celestial prime meridian is an imaginary half-circle running from the north celestial pole to the south celestial pole and crossing perpendicular to the celestial equator at the point of the
a. autumnal equinox. b. summer solstice. c. vernal equinox. d. winter solstice.