A flask and a breaker both have the same depth, as shown on the figure. If they are both filled with water, which will have the greater pressure at the bottom?
3
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Resistance and Resistivity: A certain metal wire has a cross-sectional area of 1.0 cm2 and a resistivity of 1.7 × 10-8 ? ? m. How long would it have to be to have a resistance of 1.0 ??
A. 5.9 × 106 m B. 5.9 m C. 5.9 × 104 m D. 590 m E. 5.9 km
A swimmer swims 20 laps in a north-south facing pool in 7.00 minutes. Her first lap is toward the north. Her displacement and average velocity are
A. 0; 0. B. 0; 2.38 m/s, south. C. 0; 2.38 m/s, north. D. 1 000 m, south; 2.38 m/s, south. E. 1 000 m, north; 2.38 m/s, north.
Match the words in the left-hand column to the appropriate blanks in the sentences in the right-hand column. Use each word only once.
Saturn, Earth, Mars, Venus, Uranus, Mercury, Jupiter, Neptune
1. ____________ has a rotational axis that is tilted so much it lies nearly in the plane of its orbit.
2. ____________ is the planet with the highest average surface temperature.
3. The planet that orbits closest to the Sun is __________.
4. The only rocky planet to have more than one moon is ___________.
5. ___________ is the jovian planet that orbits closest to the Sun.
6. Most of the surface of _________ is covered with liquid water.
7. ___________ is about 30 times as far from the Sun as our own planet.
8. The planet with the lowest average density is ___________.
In an RC circuit, what fraction of the final energy is stored in an initially uncharged capacitor after it has been charging for 3.0 time constants?
A. 0.84 B. 0.90 C. 0.75 D. 0.60 E. 0.03