Is it possible for the kinetic energy of an object to be negative?
A. Yes
B. No
Ans: B. No
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A wooden raft has a mass of 50 kg. When empty it floats in water (density 1000 kg/m3 ) with 69% of its volume submerged. What mass of sand can be put on the raft without it sinking?
What will be an ideal response?
How does the surface temperature and atmospheric pressure on Venus compare with the Earth?
A) higher temperatures and pressures B) lower temperatures but higher pressures C) lower temperatures and pressures D) higher temperatures but lower pressures
Equilibrium: A 10-kg sign is held by two ropes as shown in the figure. What is the tension on rope A?
A. 44 N B. 69 N C. 72 N D. 88 N E. 98 N
Two ways that the internal energy of a substance can be increased are __________ and __________
Fill in the blank(s) with correct word