PhysicsLAB: June 2018, Part 2 (2024)

NY Regents
June 2018, Part 2
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26. A microwave with a frequency of 5.0 x 10¹⁰ hertz has a period of

(1)2.0 x 10^-11 s

(2) 6.0 x 10^-3 s

(3)1.7 x 10² s

(4)1.5 x 10¹⁹ s

27. After two light waves have interfered in a vacuum, the two waves will be

(1)changed in frequency

(2) changed in velocity

(3)changed in amplitude

(4)unchanged

28. A glass rod is rubbed with silk. During this process, a positive charge is given to the glass rod by

(1)adding electrons to the rod

(2) adding protons to the rod

(3)removing electrons from the rod

(4) removing protons from the rod

29. A photon with an energy of 1.33 x 10^-21 joule has a frequency of

(1)5.02 x 10¹³ Hz

(2)2.01 x 10¹² Hz

(3)8.82 x 10¹⁴ Hz

(4) 5.30 x 10³⁴ Hz

30.The speed of a car is increased uniformly from 11 meters per second to 19 meters per second. The average speed of the car during this interval is

(1) 0.0 m/s

(2)15 m/s

(3)30. m/s

(4)4.0 m/s

31. The energy equivalent of the rest mass of an electron is

(1) 2.73 x 10^-22 J

(2)8.20 x 10^-14 J

(3) 1.50 x 10^-10 J

(4) 1.44 x 10^-2 J

32. A spring has an unstretched length of 0.40 meter. The spring is stretched to a length of 0.60 meter when a 10.-newton weight is hung motionless from one end. The spring constant of this spring is

(1) 10. N/m

(2) 17 N/m

(3) 25 N/m

(4) 50. N/m

33. An electric circuit contains a battery, three lamps, and an open switch, as represented in the diagram below.

When the switch is open, there is an electric current in

(1) lamp I, only

(2) lamps II and III, only

(3) lamps I, II, and III

(4) none of the lamps

34. Which diagram correctly represents an electric field?

35. Which points on the wave diagram below are 90º out of phase with each other?

(1) A and E

(2) B and C

(3) C and D

(4) D and E

36. The height of an individual step on a staircase is closest to

(1) 2.0 x 10^-2 m

(2) 2.0 x 10^-1 m

(3) 2.0 x 10⁰ m

(4) 2.0 x 10¹ m

37. What is the magnitude of the electrostatic force exerted on an electron by another electron when they are 0.10 meter apart?

(1) 2.6 x 10^-36 N

(2) 2.3 x 10^-27 N

(3) 2.3 x 10^-26 N

(4) 1.4 x 10^-8 N

38. After a 65-newton weight has fallen freely from rest a vertical distance of 5.3 meters, the kinetic energy of the weight is

(1) 12 J

(2) 340 J

(3) 910 J

(4) 1800 J

39. A 0.500-kilogram cart traveling to the right on a horizontal, frictionless surface at 2.20 meters per second collides head on with a 0.800-kilogram cart moving to the left at 1.10 meters per second. What is the magnitude of the total momentum of the two-cart system after the collision?

(1) 0.22 kg•m/s

(2) 0.39 kg•m/s

(3) 1.98 kg•m/s

(4) 4.29 kg•m/s

40. An object weighing 2.0 newtons is pushed across a horizontal, frictionless surface by a horizontal force of 4.0 newtons. The magnitude of the net force acting on the object is

(1) 0.0 N

(2) 2.0 N

(3) 8.0 N

(4) 4.0 N

41. The ratio of the wavelength of AM radio waves traveling in a vacuum to the wavelength of FM radio waves traveling in a vacuum is approximately

(1) 1 to 1

(2) 2 to 1

(3) 10² to 1

(4) 10⁸ to 1

42. A charm quark has a charge of approximately

(1) 5.33 x 10^-20 C

(2) 1.07 x 10^-19 C

(3) 1.60 x 10^-19 C

(4) 2.40 x 10^-19 C

43. The diagram below represents a 3.0-ohm resistor connected to a 12-volt battery. Meters X and Y are correctly connected in the circuit.

What are the readings on the meters?

(1) X = 12 V and Y = 0.25 A

(2) X = 12 V and Y = 4.0 A

(3) X = 0.25 A and Y = 12 V

(4) X = 4.0 A and Y = 12 V

44. A toy airplane, flying in a horizontal, circular path, completes 10. complete circles in 30. seconds. If the radius of the plane’s circular path is 4.0 meters, the average speed of the airplane is

(1) 0.13 m/s

(2) 0.84 m/s

(3) 1.3 m/s

(4) 8.4 m/s

45. Which pair of graphs represents the vertical motion of an object falling freely from rest?

46. An object is thrown straight upward. Which graph best represents the relationship between the object’s kinetic energy and the height of the object above its release point? [Neglect friction.]

47. In the diagram below, X represents a particle in a spring.

Which diagram represents the motion of particle X as a longitudinal wave passes through the spring toward the right?

48. As represented in the diagram below, two wave pulses, X and Y, are traveling toward each other in a rope. Both wave pulses have an amplitude of 0.30 m.

Which diagram shows the pulse produced due to the superposition of pulse X and pulse Y?

49. The horn of a car produces a sound wave of constant frequency. The car, traveling at constant speed, approaches, passes, and then moves away from a stationary observer. Which graph best represents the frequency of this sound wave detected by the observer during the time interval in which the car approaches,

passes, and moves away?

50. A combination of two identical resistors connected in series has an equivalent resistance of 10. ohms. What is the equivalent resistance of the combination of these same two resistors when connected in parallel?

(1) 2.5 Ω

(2) 5.0 Ω

(3) 10. Ω

(4) 20. Ω

PhysicsLAB: June 2018, Part 2 (2024)

References