Microturbines will revolutionize the electricity industry
What will be an ideal response?
Hardly. These microturbines have a place in using energy that would have been
wasted, but this is not revolutionary.
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The energy of an electron on an atom that is not in a magnetic field is not dependent upon which of the following?
(a) Charge on the nucleus (b) Spin quantum number (c) Angular momentum quantum number (d) Principle quantum number
A space satellite weighs 100,000 newtons on Earth. When orbiting at a height of 6000 km [one Earth-radius] above Earth, its weight is
A) zero. B) 25,000 newtons. C) 50,000 newtons. D) 400,000 newtons. E) 100,000 newtons.
An ambulance with its siren on is heading due east along a straight road at 60 mph. A car is also moving along the same road. In which case will the driver of the car perceive the frequency of the siren to be lowest?
a. The car is moving east at 65 mph and is behind the ambulance b. The car is moving west at 65 mph and is behind the ambulance. c. The car is moving east at 65 mph and is in front of the ambulance. d. The car is moving west at 65 mph and is in front of the ambulance.
A change in the direction of a wave because of a change in the velocity of the wave is called ______________
Fill in the blank(s) with correct word