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41 The spring of a toy car is wound by pushing the car backward with an average
force of 15 newtons through a distance of 0.50 meter. How much elastic potential
energy is stored in the car’s spring during this process?
(1) 1.9 J
(2) 7.5 J
(3) 30. J
(4) 56 J
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42 The graph below shows the relationship between the potential difference across
a metallic conductor and the electric current through the conductor at constant
temperature T1.
Which graph best represents the relationship between potential difference and current
for the same conductor maintained at a higher constant temperature, T2?
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43 The diagram below shows a circuit with two resistors.
What is the reading on ammeter A?
(1) 1.3 A
(2) 1.5 A
(3) 3.0 A
(4) 0.75 A
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44 The diagram below shows a bar magnet.
Which arrow best represents the direction of the needle of a compass placed at point
A?
(1) ↑
(2) ↓
(3) →
(4) ←
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45 Which graph best represents the motion of a block accelerating uniformly down
an inclined plane?
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Note that question 46 has only three choices.
46 The graph below shows elongation as a function of the applied force for two springs,
A and B.
Compared to the spring constant for spring A, the spring constant for spring B is
(1) smaller
(2) larger
(3) the same
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47 The diagram below represents currents in a segment of an electric circuit.
What is the reading of ammeter A?
(1) 1 A
(2) 2 A
(3) 3 A
(4) 4 A
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Base your answers to questions 48 and 49 on the diagram below, which represents
a light ray traveling from air to Lucite to medium Y and back into air.
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48 The sine of angle face="Symbol">qx is
(1) 0.333
(2) 0.500
(3) 0.707
(4) 0.886 |
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49 Light travels slowest in
(1) air, only
(2) Lucite, only
(3) medium Y, only
(4) air, Lucite, and medium Y
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50 The diagram below shows two pulses traveling toward each other in a uniform medium.
Which diagram best represents the medium when the pulses meet at point X?
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An outfielder throws a baseball to the first baseman at a speed of 19.6 meters
per second and an angle of 30.° above the horizontal.
51 Which pair represents the initial horizontal velocity (vx) and initial
vertical velocity (vy) of the baseball?
(1) vx = 17.0 m/s, vy = 9.80 m/s
(2) vx = 9.80 m/s, vy = 17.0 m/s
(3) vx = 19.4 m/s, vy = 5.90 m/s
(4) vx = 19.6 m/s, vy = 19.6 m/s
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Base your answer to question 54 on the circuit diagram below, which shows two resistors
connected to a 24-volt source of potential difference.
54 What is the total resistance of the circuit?
(1) 0.42 Ω
(2) 2.4 Ω
(3) 5.0 Ω
(4) 10. Ω
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