June 2019 Physics Regents Questions 21-30 Question Preview (ID: 59786)

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Which types of forces exist between the two protons in a helium nucleus?

a) a repulsive electrostatic force and a repulsive gravitational force

b) a repulsive electrostatic force and an attractive strong nuclear force

c) an attractive electrostatic force and an attractive gravitational force

d) an attractive electrostatic force and an attractive strong nuclear force

Which diagram represents diffraction of wave fronts as they encounter an obstacle?

a) 1

b) 2

c) 3

d) 4

The Doppler effect is best described as the

a) bending of waves as they pass by obstacles or through openings

b) change in speed of a wave as the wave moves from one medium to another

c) creation of a standing wave from two waves traveling in opposite directions in the same medium

d) shift in the observed frequency and wavelength of a wave caused by the relative motion between the wave’s source and observer

The speed of light (f = 5.09 × 10^14 Hz) in glycerol is

a) 1.70 × 10^6 m/s

b) 2.04 × 10^8 m/s

c) 3.00 × 10^8 m/s

d) 4.41 × 10^8 m/s

How many antinodes are shown in this standing wave?

a) 6

b) 2

c) 3

d) 4

A light wave travels from one medium into a second medium with a greater absolute index of refraction. Which characteristic of the wave can not change as the wave enters the second medium?

a) frequency

b) speed

c) direction

d) wavelength

A space probe produces a radio signal pulse. If the pulse reaches Earth 12.3 seconds after it is emitted by the probe, what is the distance from the probe to Earth?

a) 3.71 × 10^2 m

b) 4.07 × 10^3 m

c) 4.10 × 10^8 m

d) 3.69 × 10^9 m

The angle of reflection for this light ray is

a) 20°

b) 70°

c) 140°

d) 160°

A student generates water waves in a pool of water. In order to increase the energy carried by the waves, the student should generate waves with a

a) greater amplitude

b) higher frequency

c) greater wavelength

d) longer period

A wave generator produces straight, parallel wave fronts in a shallow tank of uniform-depth water. As the frequency of vibration of the generator increases, which characteristic of the wave will always decrease?

a) amplitude

b) phase

c) wavelength

d) speed

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