This figure is a diagram of a multiflash image of an air puck moving to the right on a horizontal surface. The images sketched are separated by equal time intervals, and the first and last images show the puck at rest. In figure b, which color graph best shows the puck’s position as a function of time?
3
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The solar neutrino problem was solved when we realized neutrinos change types when they pass through matter
Indicate whether the statement is true or false
A clown at the circus blows up a balloon with helium. This balloon will not float to the ceiling unless
A. the pressure of the helium inside the balloon is less than the atmospheric pressure. B. the balloon and the helium it contains weigh less than the air displaced by the balloon. C. the pressure of the helium inside the balloon is greater than the atmospheric pressure. D. the weight of the balloon is less than the weight of the air displaced by the balloon.
What organic compound is represented by a hexagon with a circle inside?
a. Cyclohexane b. Cycloheptane c. Benzene d. Ethanol e. Methane
What is the minimum amount of energy required for a 70.0-kg climber carrying a 20.0-kg pack to climb Mt. Everest, which is 8850 m high?
a. 8.67 MJ c. 4.41 MJ b. 7.81 MJ d. 0.900 MJ