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Physics Regents Practice Questions
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Preguntas del test (31)
1Which term identifies a scalar quantity?
- Adisplacement
- Btime
- Cmomentum
- Dvelocity
2Two 20.-newton forces act concurrently on an object. What angle between these forces will produce a resultant force with the greatest magnitude?
- A0°
- B45°
- C90°
- D180°
3The centripetal force acting on the space shuttle as it orbits Earth is equal to the shuttle’s
- Amomentum
- Binertia
- Cvelocity
- Dweight
4An 8.0-newton wooden block slides across a horizontal wooden floor at constant velocity. What is the magnitude of the force of kinetic friction between the block and the floor?
- A3.0 N
- B8.0 N
- C2.4 N
- D5.0 N
5 A particle could have a charge of
- A0.8×10^−19 C
- B1.2×10^−19 C
- C3.2×10^−19 C
- D4.1×10−19 C
6A rock is thrown straight up into the air. At the highest point of the rock’s path, the magnitude of the net force acting on the rock is
- A less than the magnitude of the rock’s weight, but greater than zero
- Bgreater than the magnitude of the rock’s weight
- Cthe same as the magnitude of the rock’s weight
- Dzero
7An object accelerates uniformly from 3.0 meters per second east to 8.0 meters per second east in 2.0 seconds. What is the magnitude of the acceleration of the object?
- A2.5 m/s^2
- B5.0 m/s^2
- C5.5 m/s^2
- D3.0 m/s^2
8An object accelerates uniformly from 3.0 meters per second east to 8.0 meters per second east in 2.0 seconds. What is the magnitude of the acceleration of the object?
- A2.5 m/s^2
- B5.0 m/s^2
- C5.5 m/s^2
- D3.0 m/s^2
9As a box is pushed 30. meters across a horizontal floor by a constant horizontal force of 25 newtons, the kinetic energy of the box increases by 300. joules. How much total internal energy is produced during this process?
- A150 J
- B450 J
- C250 J
- D750 J
10A baseball is thrown at an angle of 40.0° above the horizontal. The horizontal component of the baseball’s initial velocity is 12.0 meters per second. What is the magnitude of the ball’s initial velocity?
- A7.71 m/s
- B9.20 m/s
- C15.7 m/s
- D18.7 m/s
11As shown in the diagram, an open box and its contents have a combined mass of 5.0 kilograms. A horizontal force of 15 newtons is required to push the box at a constant speed of 1.5 meters per second across a level surface. The inertia of the box and its contents increases if there is an increase in the
- Aspeed of the box
- Bmass of the contents of the box
- Cmagnitude of the horizontal force applied to the box
- Dcoefficient of kinetic friction between the box and the level surface
12A number of 1.0-newton horizontal forces are exerted on a block on a frictionless, horizontal surface. Which top-view diagram shows the forces producing the greatest magnitude of acceleration of the block?
- A
- B
- C
- D
- A
13A car uses its brakes to stop on a level road. During this process, there must be a conversion of kinetic energy into
- Alight energy
- Bnuclear energy
- Cinternal energy
- Dgravitational potential energy
14When a teacher shines light on a photocell attached to a fan, the blades of the fan turn. The brighter the light shone on the photocell, the faster the blades turn. Which energy conversion is illustrated by this demonstration?
- Alight → thermal → mechanical
- Blight → nuclear → thermal
- Clight → electrical → mechanical
- Dlight → mechanical → chemical
15Two electrons are separated by a distance of 3.00 × 10−6 meter. What are the magnitude and direction of the electrostatic forces each exerts on the other?
- A2.56 × 10^−17 N away from each other
- B2.56 × 10^−17 N towards each other
- C7.67 × 10^−23 N away from each other
- D7.67 × 10^−23 N towards each other
16Two electrons are separated by a distance of 3.00 × 10−6 meter. What are the magnitude and direction of the electrostatic forces each exerts on the other?
- A2.56 × 10^−17 N away from each other
- B2.56 × 10^−17 N towards each other
- C7.67 × 10^−23 N away from each other
- D7.67 × 10^−23 N towards each other
17Moving a length of copper wire through a magnetic field may cause the wire to have a
- Apotential difference across it
- Blower temperature
- Clower resistivity
- Dhigher resistance
18A sound wave traveling eastward through air causes the air molecules to
- Avibrate east and west
- Bvibrate north and west
- Cmove eastward, only
- Dmove northward, only
19Which particles are not affected by the strong force?
- Ahadrons
- Bprotons
- Celectrons
- Dneutrons
20A photon is emitted as the electron in a hydrogen atom drops from the n = 5 energy level directly to the n = 3 energy level. What is the energy of the emitted photon?
- A0.85 eV
- B0.97 eV
- C1.05 eV
- D2.01 eV
21In the diagram, a stationary source located at point S produces sound having a constant frequency of 512 hertz. Observer A, 50. meters to the left of S, hears a frequency of 512 hertz. Observer B, 100. meters to the right of S, hears a frequency lower than 512 hertz. Which statement best describes the motion of the observers?
- AObserver A is moving toward point S, and observer B is stationary.
- BObserver A is moving away from point S,and observer B is stationary.
- CObserver A is stationary, and observer B is moving toward point S.
- DObserver A is stationary, and observer B is moving away from point S.
22Which graph represents the relationship between the magnitude of the gravitational force exerted by Earth on a spacecraft and the distance between the center of the spacecraft and center of Earth? [Assume constant mass for the spacecraft.]
- A
- B
- C
- D
- A
23The diagram represents a circuit consisting of two resistors connected to a source of potential difference. What is the current through the 20.-ohm resistor?
- A0.25 A
- B6.0 A
- C4.0 A
- D1.2 A
24A ray of light ( f = 5.09 × 1014 Hz) travels through various substances. Which graph best represents the relationship between the absolute index of refraction of these substances and the corresponding speed of light in these substances?
- A
- B
- C
- D
- A
25A 4.0-kilogram object is accelerated at 3.0 meters per second^2 north by an unbalanced force. The same unbalanced force acting on a 2.0-kilogram object will accelerate this object toward the north at
- A12 m/s^2
- B6 m/s^2
- C3 m/s^2
- D1.5 m/s^2
26When two point charges of magnitude q1 and q2 are separated by a distance, r, the magnitude of the electrostatic force between them is F. What would be the magnitude of the electrostatic force between point charges 2q1 and 4q2 when separated by a distance of 2r?
- A2F
- BF
- C16F
- D4F
27In a process called pair production, an energetic gamma ray is converted into an electron and a positron. It is not possible for a gamma ray to be converted into two electrons because
- Acharge must be conserved
- Bmomentum must be conserved
- Cmass-energy must be conserved
- Dbaryon number must be conserved
28The diagram shows a series of wave fronts approaching an opening in a barrier. Point P is located on the opposite side of the barrier. The wave fronts reach point P as a result of
- Aresonance
- Brefraction
- Creflection
- Ddiffraction
29Which particle would produce a magnetic field?
- Aa neutral particle moving in a straight line
- Ba neutral particle moving in a circle
- Ca stationary charged particle
- Da moving charged particle
30Which diagram represents the electric field between two oppositely charged conducting spheres?
- A
- B
- C
- D
- A
31Which diagram represents the electric field between two oppositely charged conducting spheres?
- A
- B
- C
- D
- A
Información
- Descripción
- Physics regents practice questions. Attribute: nysedregents.org
- Autor
- jlyn
- Idioma
- English
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