June 2017 Physics Regents Questions 11-20 Question Preview (ID: 59805)

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What is the speed of cart A after the spring is released?

a) 14 m/s

b) 6.0 m/s

c) 3.0 m/s

d) 2.6 m/s

Which arrow represents the direction of the net force acting on the electron when the electron is at position A?

a) 1

b) 2

c) 3

d) 4

The potential difference between two points, A and B, in an electric field is 2.00 volts. The energy required to move a charge of 8.00 × 10^−19 coulomb from point A to point B is

a) 4.00 × 10^−19 J

b) 1.60 × 10^−18 J

c) 6.25 × 10^17 J

d) 2.50 × 10^18 J

Which statement describes the gravitational force and the electrostatic force between two charged particles?

a) The gravitational force may be either attractive or repulsive, whereas the electrostatic force must be attractive.

b) The gravitational force must be attractive, whereas the electrostatic force may be either attractive or repulsive.

c) Both forces may be either attractive or repulsive.

d) Both forces must be attractive.

An electrostatic force exists between two +3.20 × 10^−19-coulomb point charges separated by a distance of 0.030 meter. As the distance between the two point charges is decreased, the electrostatic force of

a) attraction between the two charges decreases

b) attraction between the two charges increases

c) repulsion between the two charges decreases

d) repulsion between the two charges increases

What is the energy of the photon emitted when an electron in a mercury atom drops from energy level f to energy level b?

a) 8.42 eV

b) 5.74 eV

c) 3.06 eV

d) 2.68 eV

An observer counts 4 complete water waves passing by the end of a dock every 10. seconds. What is the frequency of the waves?

a) 0.40 Hz

b) 2.5 Hz

c) 40. Hz

d) 4.0 Hz

Copper is a metal commonly used for electrical wiring in houses. Which metal conducts electricity better than copper at 20°C?

a) aluminum

b) gold

c) nichrome

d) silver

A motor does 20. joules of work on a block, accelerating the block vertically upward. Neglecting friction, if the gravitational potential energy of the block increases by 15 joules, its kinetic energy

a) decreases by 5 J

b) increases by 5 J

c) decreases by 35 J

d) increases by 35 J

When only one lightbulb blows out, an entire string of decorative lights goes out. The lights in this string must be connected in

a) parallel with one current pathway

b) parallel with multiple current pathways

c) series with one current pathway

d) series with multiple current pathways

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