Suppose you have a 100-watt light bulb that you leave turned on for one minute. How much energy does it use?
A) 6,000 joules
B) 6,000 watts
C) 100 watts
D) 100 joules
A
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As viewed by us here on Earth, where does time run slowest?
A) the surface of a white dwarf B) the surface of the Sun C) the surface of the Earth D) the top of Mount Everest on Earth E) in empty space
A 10-N block and a 1-N block lie on a horizontal frictionless table. To impart equal horizontal accelerations, we would have to push the heavier block with
A) an equal force. B) 10 times as much force. C) 10 squared or 100 times as much force. D) 1/10 as much force. E) none of the above
The less internal heat a jovian planet emits, the more it stirs up its clouds
Indicate whether the statement is true or false
A 2 000-kg truck traveling at a speed of 6.0 m/s makes a 90° turn in a time of 4.0 s and emerges from this turn with a speed of 4.0 m/s. What is the magnitude of the average resultant force on the truck during this turn?
a. 4.0 kN b. 5.0 kN c. 3.6 kN d. 6.4 kN e. 0.67 kN