June 2016 Physics Regents Questions 41-50 Question Preview (ID: 59813)

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How far must car A travel from this initial position before it catches up with car B?

a) 200 m

b) 400 m

c) 800 m

d) 1000 m

A 2700-ohm resistor in an electric circuit draws a current of 2.4 milliamperes. The total charge that passes through the resistor in 15 seconds is

a) 1.6 × 10^−4 C

b) 3.6 × 10^−2 C

c) 1.6 × 10^−1 C

d) 3.6 × 10^1 C

A 1000.–kilogram car traveling 20.0 meters per second east experiences an impulse of 2000. newton • seconds west. What is the final velocity of the car after the impulse has been applied?

a) 18.0 m/s east

b) 19.5 m/s east

c) 20.5 m/s west

d) 22.0 m/s west

Which graph represents the relationship between the potential difference applied to a copper wire and the resulting current in the wire at constant temperature?

a) 1

b) 2

c) 3

d) 4

A tungsten wire has resistance R at 20°C. A second tungsten wire at 20°C has twice the length and half the cross-sectional area of the first wire. In terms of R, the resistance of the second wire is

a) R/2

b) R

c) 2R

d) 2R

As the temperature of the filament increases, what happens to the resistance of the filament and the current through the filament?

a) The resistance increases and the current decreases.

b) The resistance increases and the current increases.

c) The resistance decreases and the current decreases.

d) The resistance decreases and the current increases.

Which diagram shows the configuration of wave fronts and barrier opening that will result in the greatest diffraction of the waves passing through the opening? Assume all diagrams are drawn to the same scale.

a) 1

b) 2

c) 3

d) 4

A singer demonstrated that she could shatter a crystal glass by singing a note with a wavelength of 0.320 meter in air at STP. What was the natural frequency of the glass?

a) 9.67 × 10^−4 Hz

b) 1.05 × 10^2 Hz

c) 1.03 × 10^3 Hz

d) 9.38 × 10^8 Hz

Maximum constructive interference occurs at the

a) antinodes A, C, and E

b) nodes A, C, and E

c) antinodes B and D

d) nodes B and D

Which circuit diagram represents voltmeter V connected correctly to measure the potential difference across resistor R2?

a) 1

b) 2

c) 3

d) 4

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