A monkey is sitting at the top of a tree 20 m high from the ground level. A person standing on the ground wants to feed the monkey. He uses a bow and arrow to launch the food to the monkey
If the monkey remains seated at the top of the tree, how should the person aim the arrow containing the food so that the monkey gets the food? A) He should aim it at the monkey.
B) He should aim it below the monkey.
C) He should aim it above the monkey.
D) None of the other choices is correct.
C
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A worker lifts a heavy load using a two-pulley system as in the figure. If the tension in the rope segment labeled A is 725 N, what are the weight of the load, and the force that the worker exerts on the rope, respectively?
A. 363 N, 725 N
B. 725 N, 363 N
C. 1450 N, 725 N
D. 1450 N, 1450 N
E. Insufficient information is given to answer this question.
Consider the ratios of the heat capacities ? = Cp/Cv for the three types of ideal gases: monatomic, diatomic, and polyatomic.
A. ? is the greatest for monatomic gases B. ? is the greatest for polyatomic gases C. ? is the same only for diatomic and polyatomic gases D. ? is the same only for monatomic and diatomic gases E. ? is the same for all three
If the carbon isotope evidence does indicate life 3.85 billion years ago, it suggests that life must have been widespread at that point
Indicate whether the statement is true or false
Two point charges of magnitude 4.0 ?C and -4.0 ?C are situated along the x-axis at x1 = 2.0 m and x2 = -2.0 m, respectively. What is the electric potential at the origin of the xy-coordinate system?
A) -36 × 103 V B) 0 V C) 36 × 103 V D) -48 × 103 V E) 48 × 103 V