When a 12 volt car battery is short circuited with a wire, the current drawn from the battery is 100 amperes. The resistance of the wire is

a. zero
b. 0.12 ohms
c. 100/12 = 8.33 ohms
d. 1200 ohms
e. none of the above


B

Physics & Space Science

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Energy Conservation With Conservative Forces: Two identical grasshoppers jump into the air with the same initial speed and experience no air resistance. Grasshopper A goes straight up, but grasshopper B goes up at a 66° angle above the horizontal. Which of the following statements about these grasshoppers are correct? (There could be more than one correct choice.)

A. At their highest point, both of them have the same amount of gravitational potential energy. B. At their highest point, both of them have the same amount of kinetic energy. C. At their highest point, both of them have the same amount of mechanical energy. D. At their highest point, grasshopper B is moving faster than grasshopper A. E. At their highest point, grasshopper A has more gravitational potential energy than grasshopper B.

Physics & Space Science

What do we mean when we say the universe becomes transparent at 300,000 years after the Big Bang?

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Physics & Space Science

If we observe one edge of a planet to be redshifted and the opposite edge to be blueshifted, what can we conclude about the planet?

A) The planet is actually two bodies, one moving toward us, the other away from us. B) The planet is in the process of formation. C) The planet is in the process of falling apart. D) The planet is rotating.

Physics & Space Science

A(n) ____________________ uses a mirror as its objective

Fill in the blank(s) with correct word

Physics & Space Science