If a planet is seeing its Moon in the New Phase right now, in what phase would the planetappear to be when viewed from its Moon?
a) Third Quarter Planet
b) Full Planet
c) New Planet
d) You can't see the planet from its Moon
e) First Quarter Planet
Ans: b) Full Planet
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If we detected an Earth-like planet in the habitable zone around another star, how might we learn whether it harbored life?
What will be an ideal response?
By what factor is the resistance of a copper wire changed when its temperature is increased from 30.0°C to 115°C? The temperature coefficient of resistivity for copper = 3.9 × 10^?3 (°C)?1
a. 1.45 b. 1.12 c. 1.33 d. 0.669 e. 4.32
What is the essential reason that all perpetual motion machines fail?
a. Perpetual motion machines must create energy in order to do useful work, and energy cannot be created. b. Perpetual motion machines must at least preserve all the energy in a system, and some is always lost. c. Perpetual motion machines run on gasoline, and gasoline is not a renewable resource. d. A perpetual motion machine necessarily removes heat from a single-temperature environment. e. Perpetual motion machines have to contend with friction, which destroys energy.
A beta particle is another name for a helium nucleus
Indicate whether the statement is true or false