How it is that Insull's apartment building allows more efficiency in the distribution and supply system?
What will be an ideal response?
Different families operate on different schedules. One might eat at 6 PM, some
may eat at 7 PM. This means that the maximum demand for one family and for the other
fall at different times. The net generating capacity is less than if each family had its own
generator.
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The fastest we could accelerate a nuclear-powered rocket to is approximately
A) 50% of the speed of light B) 0.001% of the speed of light C) 0.1% of the speed of light D) 10% of the speed of light
How strongly, and in what direction, does a 1-newton apple pull on Earth?
A) It pulls downward, with a force of 1 newton. B) It pulls upward, with a force of 1 newton. C) It pulls upward, with a force that is much smaller than 1 newton. D) The apple does not pull on Earth at all; it is Earth that pulls downward on the apple. E) It pulls upward, with a force that is much larger than 1 newton.
An air-filled capacitor stores a potential energy of due to its charge. It is accidentally filled with water in such a way as not to discharge its plates. How much energy does it continue to store after it is filled?
(The dielectric constant for water is 78 and for air it is 1.0006.) A) 0.077 mJ B) 468 mJ C) 0.040 mJ D) 6.00 mJ
Both black and white road surfaces absorb sunlight. The warmer road surface at the end of a sunny day is the
A) black surface. B) white surface. C) neither of these