June 2024 Physics Regents Questions 11-20 Question Preview (ID: 63454)


The Questions In This Practice Exam Are Thoughtfully Crafted To Assess Your Knowledge And Skills. They Cover A Range Of Topics And Formats, Offering A Valuable Opportunity For Self-assessment And Preparation. TEACHERS: click here for quick copy question ID numbers.

A 120-newton box is pulled by a 48-newton horizontal force across a horizontal surface at constant velocity. The coefficient of kinetic friction between the box and the horizontal surface is
a) 0.041
b) 0.4
c) 0.67
d) 2.5

Compared to box A, box B has a gravitational potential energy relative to the floor that is
a) one fourth as great
b) the same
c) twice as great
d) four times as great

A 0.10-kilogram yo-yo is whirled at the end of a length of string in a horizontal circular path of radius 0.80 meter at a speed of 6.0 meters per second. The magnitude of the centripetal acceleration of the yo-yo is
a) 4.5 m/s^2
b) 7.5 m/s^2
c) 23 m/s^2
d) 45 m/s^2

A 4.0-kilogram mass is initially at rest on a horizontal, frictionless surface. A constant 2.0-newton force to the east is applied to the mass for a 5.0-second interval. As a result of this action, the mass acquires a
a) velocity of 10. m/s, east
b) velocity of 10. m/s, west
c) momentum of 10. kg•m/s, east
d) momentum of 10. kg•m/s, west

A motor lifts a 1.2 x 10^4-newton elevator 9.0 meters in 15 seconds. The minimum power output of the motor is
a) 8.0 x 10^2 W
b) 7.2 x 10^3 W
c) 1.0 x 10^5 W
d) 1.6 x 10^6 W

A train blows its horn, which emits a uniform sound as the train approaches a stationary observer. The observer hears a sound that has a
a) lower frequency than the emitted sound and is decreasing in amplitude
b) lower frequency than the emitted sound and is increasing in amplitude
c) higher frequency than the emitted sound and is decreasing in amplitude
d) higher frequency than the emitted sound and is increasing in amplitude

A wood block is pulled at constant velocity across a horizontal wood floor. Which type of energy increases in this block-floor system as the block moves?
a) gravitational potential
b) kinetic
c) mechanical
d) thermal

A total energy of 5.0 joules is used to move an electron from position A to position B in a uniform electric field. What is the potential difference between positions A and B?
a) 3.1 x 10^19 V
b) 8.0 x 10^-19 V
c) 3.2 x 10^-20 V
d) 3.1 x 10^18 V

A 0.14-kilogram lacrosse ball, traveling west at 17 meters per second, is brought to rest with a 0.21-kilogram lacrosse stick. If the force applied by the lacrosse stick on the ball is 220 newtons east, the force applied by the ball on the stick is
a) 150 N east
b) 150 N west
c) 220 N east
d) 220 N west

Four wires are tested for electrical conductivity. All the wires have the same length and the same cross-sectional area, but are made of different metals. Which wire has the highest conductivity at 20°C?
a) aluminum
b) copper
c) gold
d) silver

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