Car batteries are often rated in ampere-hours. This information designates the amount of ______ that the battery can supply
1.current
2.power
3.energy
4.charge
5.potential
4
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If you are standing at the Earth's north pole, which of the following would be located at the zenith?
a. the nadir b. the star Vega c. the celestial equator d. the north celestial pole
A ping-pong ball covered with a conducting graphite coating has a mass of 2.5 × 10^-3 kg and a charge of 4.0 µC. What electric field directed upward will exactly balance the weight of the ball? (g = 9.8 m/s2)
a. 6.1 × 10^3 N/C c. 5.1 × 10^6 N/C b. 2.0 × 10^-7 N/C d. 1.2 × 10^4 N/C
Relative Velocity: The driver of a motorboat that can move at 10 m/s in still water wishes to travel directly across a river in which the current flows at 5.0 m/s.(a) At what angle, measured from the upstream direction, should the driver head the boat?(b) How many minutes will it take to cross the river if it is 1.6 km wide at that point?
Fill in the blank(s) with the appropriate word(s).
How does the surface temperature and atmospheric pressure on Venus compare with the Earth?
A) higher temperatures and pressures B) lower temperatures but higher pressures C) lower temperatures and pressures D) higher temperatures but lower pressures