Which is a consequence of the synchronous orbit of the Earth's Moon (equal period ofrotation and revolution) ?
a) lunar eclipses
b) phases of the Moon
c) same side of the Moon always faces the Earth
d) solar eclipses
e) craters on the Moon
Ans: c) same side of the Moon always faces the Earth
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There is a superforce that separates into the electromagnetic, weak, and strong nuclear forces below a critical temperature
Indicate whether the statement is true or false
The spectrum of the hydrogen atom differs from the spectrum of the helium atom due to
A) their different energy levels. B) the different frequencies of their emitted photons. C) Both of the above. D) Neither of the above.
An astronaut tosses a ball out in space where gravitational forces may be neglected. What will happen to the ball?
a. It will stop as soon as the force the astronaut gave it is used up. b. It will stop when the energy the astronaut gave it runs out. c. It will stop after a short time because there is no gravity to keep it moving. d. It will move in a circle like a boomerang. e. It will be slowed down very gradually by collisions with molecules in space.
If C = 36 µF, determine the equivalent capacitance for the combination shown
a.
36 µF
b.
28 µF
c.
14 µF
d.
24 µF
e.
33? µF