PhysicsLAB NY Regents Exams
June 2005, Part 3

Constants        Formulas

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41 A 330.-ohm resistor is connected to a 5.00-volt battery. The current through the resistor is

(1) 0.152 mA
(2) 15.2 mA
(3) 335 mA
(4) 1650 mA

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Note that question 42 has only three choices.

42 Compared to the period of a wave of red light the period of a wave of green light is

(1) less
(2) greater
(3) the same

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43 A hydrogen atom with an electron initially in the n = 2 level is excited further until the electron is in the n = 4 level. This energy level change occurs because the atom has

(1) absorbed a 0.85-eV photon
(2) emitted a 0.85-eV photon
(3) absorbed a 2.55-eV photon
(4) emitted a 2.55-eV photon

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44 Which graph best represents the relationship between resistance and length of a copper wire of uniform cross-sectional area at constant temperature?

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45 The diagram below represents a block at rest on an incline.

Which diagram best represents the forces acting on the block?
(Ff = frictional force, FN = normal force, and Fw = weight.)

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46 A 1.0 103-kilogram car travels at a constant speed of 20. meters per second around a horizontal circular track. Which diagram correctly represents the direction of the car’s velocity (v) and the direction of the centripetal force (Fc) acting on the car at one particular moment?

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47 Which graph best represents the relationship between the magnitude of the electrostatic force and the distance between two oppositely charged particles?





Additional Tests
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New York State Library System.

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