June 2017 Physics Regents Questions 41-50 Question Preview (ID: 59808)

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Compared to the wave frequency and wavelength observed at point A, the wave observed at point B has a

a) higher frequency and a shorter wavelength

b) higher frequency and a longer wavelength

c) lower frequency and a shorter wavelength

d) lower frequency and a longer wavelength

What is the magnitude of the electric force between the two spheres?

a) 3.0 × 10^−12 N

b) 1.0 × 10^−6 N

c) 2.7 × 10^−2 N

d) 5.4 × 10^−2 N

The number of excess elementary charges on sphere A is

a) 6.4 × 10^−25

b) 6.4 × 10^−19

c) 2.5 × 10^13

d) 5.0 × 10^13

The piece of wire that has the greatest resistance is

a) wire 1

b) wire 2

c) wire 3

d) wire 4

What is the total number of antinodes on the standing wave in the diagram?

a) 6

b) 2

c) 3

d) 4

What is the phase difference between the incident wave and the reflected wave at point P?

a) 0°

b) 90°

c) 180°

d) 270°

Which graph represents the relationship between the energy of photons and the wavelengths of photons in a vacuum?

a) 1

b) 2

c) 3

d) 4

A constant eastward horizontal force of 70. newtons is applied to a 20.-kilogram crate moving toward the east on a level floor. If the frictional force on the crate has a magnitude of 10. newtons, what is the magnitude of the crate’s acceleration?

a) 0.50 m/s^2

b) 3.5 m/s^2

c) 3.0 m/s^2

d) 4.0 m/s^2

What is the magnitude of the average net force acting on the cannon?

a) 1.6 N

b) 16 N

c) 8.0 × 10^3 N

d) 4.0 × 10^6 N

What is the net charge on sphere X after the spheres have separated?

a) 0 C

b) −2 × 10^−6 C

c) −4 × 10^−6 C

d) −6 × 10^−6 C

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