Pumice is a volcanic rock that floats, which means its density is
A) less than the density of water.
B) equal to the density of water.
C) more than the density of water.
D) need more information.
Answer: A
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The Sun rotates now with a rotation speed of about 2 km/sec. If its radius shrank to the size of Earth, about how fast would it spin?
A. 20 km/sec. B. 400 km/sec. C. 2,000 km/sec. D. 0.2 km/sec. E. 200 km/sec.
You are driving in your car with a sack of groceries in the seat next to you. You see a light change and you slow down and the sack remains on the seat. Suddenly the car in front of you slams on the brakes, and you are forced to brake harder
The groceries slide off the seat. Explain what happened.
An electromagnetic field
A) is a region of space where a charge would feel a force. B) can exist in vacuum. C) Both of the above. D) None of the above.
If you are traveling at an average speed of 60 miles per hour, how long will it take to go from mile marker 1 to mile marker 7?
a. 12 minutes b. 6 minutes c. 7 minutes d. 14 minutes e. 15 minutes