June 2018 Physics Regents Questions 11-20 Question Preview (ID: 59800)

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What is the magnitude of the gravitational force of attraction between two 0.425-kilogram soccer balls when the distance between their centers is 0.500 meter?

a) 2.41 × 10^−11 N

b) 4.82 × 10^−11 N

c) 5.67 × 10^−11 N

d) 1.13 × 10^−11 N

The current through the wire is

a) 0.20 A

b) 0.40 A

c) 0.80 A

d) 1.6 A

The work per unit charge required to move a charge between two points in an electric circuit defines electric

a) force

b) power

c) field strength

d) potential difference

Compared to the resistivity of a 0.4-meter length of 1-millimeter-diameter copper wire at 0°C, the resistivity of a 0.8-meter length of 1-millimeter-diameter copper wire at 0°C is

a) one-fourth as great

b) one-half as great

c) the same

d) four times greater

Which forces can be either attractive or repulsive?

a) gravitational and magnetic

b) electrostatic and gravitational

c) magnetic and electrostatic

d) gravitational, magnetic, and electrostatic

A car engine supplies 2.0 × 10^3 joules of energy during the 10. seconds it takes to accelerate the car along a horizontal surface. What is the average power developed by the car engine while it is accelerating?

a) 2.0 × 10^1 W

b) 2.0 × 10^2 W

c) 2.0 × 10^3 W

d) 2.0 × 10^4 W

The magnitude of the gravitational field strength near Earth’s surface is represented by

a) Fg/m

b) G

c) mg

d) Gm1m2/r^2

Which diagram represents the directions of the velocity, v, and acceleration, a, of a toy car as it moves in a clockwise, horizontal, circular path at a constant speed?

a) 1

b) 2

c) 3

d) 4

If the magnitude of the electrostatic force exerted on the particle is 3.0 × 10^–3 newton, what is the charge of the particle?

a) 1.6 × 10^–19 C

b) 1.5 × 10^–6 C

c) 6.0 C

d) 6.7 × 10^5 C

Which arrow represents the direction of the frictional force acting on the box?

a) A

b) B

c) C

d) D

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