A square loop of wire has a current going around it. The magnetic field from the current on each side of the loop results in a magnetic force on the wire on the opposite side. Each resulting magnetic force on the opposite side wire
a. pushes inward on the loop.
b. is actually zero since a current cannot push on itself.
c. depends on whether the current is clockwise of counterclockwise.
d. pushes outward on the loop.
d
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Because of refraction, the Sun near sunset appears
A) higher in the sky. B) lower in the sky. C) farther away.
Wind blowing over the top of a hill
A) increases atmospheric pressure there. B) decreases atmospheric pressure there. C) does not affect atmospheric pressure there.
What parts of the EM spectrum are now able to be viewed in the universe?
What will be an ideal response?
Venus and Earth started out with roughly the same amount of water. While Earth still has water in abundance, all of Venus' was lost. Where did it go?
A) It chemically combined with CO2 to form H2CO3.
B) Ultraviolet rays split the hydrogen from the oxygen components, and the hydrogen escaped into space.
C) It all evaporated into space due to the intense daytime heat of 470°C.
D) Scientists are still trying to determine this.