The ____ produce(s) tides on the Earth
a. Moon alone
b. Sun alone
c. Moon and Sun
c
Physics & Space Science
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A magnet on a frictionless mount would have its magnetic north pole point toward the Earth’s geographic
A. south pole B. north pole
Physics & Space Science
If the efficiency of a Carnot engine were to be 100%, the cool reservoirs would have to be
A) at absolute zero. B) at 0°C. C) at 100°C. D) infinitely hot.
Physics & Space Science
A water bug on the surface of a pond bobs up and down three times per second on ripples with wavelength 10.5 cm. A fish resting at the surface of the pond is 8.50 m from the water bug. How long does it take a ripple passing the water bug to reach the fish?
a. 27.0 s b. 243 s c. 81.0 s d. 0.893 s
Physics & Space Science
The relative humidity is 100% at the ______________ temperature
Fill in the blank(s) with correct word
Physics & Space Science