PhysicsLAB 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
 
27. After two light waves have interfered in a vacuum, the two waves will be
 
28. A glass rod is rubbed with silk. During this process, a positive charge is given to the glass rod by
 
29. A photon with an energy of 1.33 x 10-21 joule has a frequency of
 
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
 
31. The energy equivalent of the rest mass of an electron is
 
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
 
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
 
34. Which diagram correctly represents an electric field?
 
35. Which points on the wave diagram below are 90º out of phase with each other?
 
36. The height of an individual step on a staircase is closest to
 
37. What is the magnitude of the electrostatic force exerted on an electron by another electron when they are 0.10 meter apart?
 
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
 
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?
 
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
 
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
 
42. A charm quark has a charge of approximately
 
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?
 
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
 
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?
 



 
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