A force F = bx3 acts in the x direction, where the value of b is 3.7 N/m3. How much work is done by this force in moving an object from to
A) 42 J
B) 13 J
C) 50 J
D) 57 J
Answer: A
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what is the product nucleus?
A. 13C B. 9C C. 10B D. 9B E. 9Be
A car is going around a banked curve at a high rate of speed. For the car not to skid, in which direction does the frictional force act?
A. Up the plane. B. Down the plane. C. Directly towards the center of the curve.
If the Sun's core suddenly shrank a little bit, what would happen in the Sun?
A) The core would cool off and continue to shrink as its density increased. B) The density of the core would decrease, causing the core to cool off and expand. C) The core would heat up, causing it to radiate so much energy that it would shrink even more. D) The core would heat up, fusion rates would increase, and the core would re-expand.
Two spaceships are traveling through space at speeds of 0.600c and 0.900c, respectively, with respect to Earth
If they are headed directly toward each other, what is their approach speed (in terms of the speed of light) as measured by the captain of either ship?