June 2019 Physics Regents Questions 31-40 Question Preview (ID: 59787)

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A 1.47-newton baseball is dropped from a height of 10.0 meters and falls through the air to the ground. The kinetic energy of the ball is 12.0 joules the instant before the ball strikes the ground. The maximum amount of mechanical energy converted to

a) 2.7 J

b) 12.0 J

c) 14.7 J

d) 26.7 J

Two muons would have a combined charge of

a) -3.2 × 10^−19 C

b) -1.6 × 10^−19 C

c) 0 C

d) +3.2 × 10^−19 C

What is the magnitude of the object’s acceleration?

a) 5.0 m/s^2

b) 8.0 m/s^2

c) 10.0 m/s^2

d) 20.0 m/s^2

An object of mass 2m, at an altitude equal to the Moon’s radius, r, above the surface of the Moon, is attracted to the Moon with a gravitational force of

a) F

b) 2F

c) F/2

d) F/4

Which particle will be deflected toward the positive plate as it enters the electric field?

a) photon

b) proton

c) electron

d) neutrino

At the bottom of a hill, a car has an initial velocity of +16.0 meters per second. The car is uniformly accelerated at −2.20 meters per second squared for 5.00 seconds as it moves up the hill. How far does the car travel during this 5.00-second inter

a) 107 m

b) 74.5 m

c) 52.5 m

d) 25.0 m

A student is standing in an elevator that travels from the first floor to the tenth floor of a building. The student exerts the greatest force on the floor of the elevator when the elevator is

a) accelerating upward as it leaves the first floor

b) slowing down as it approaches the tenth floor

c) moving upward at constant speed

d) at rest on the first floor

A meson could be composed of

a) a top quark and a bottom quark

b) an electron and an antielectron

c) a strange quark and an anticharm quark

d) an up quark and a muon

An electron in an excited mercury atom is in energy level g. What is the minimum energy required to ionize this atom?

a) 0.20 eV

b) 0.91 eV

c) 2.48 eV

d) 2.48 eV

A projectile lands at the same height from which it was launched. Which initial velocity will result in the greatest horizontal displacement of the projectile? Neglect friction.

a) 1

b) 2

c) 3

d) 4

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