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Test your basic knowledge |
SAT Subject Test: hysics
Start Test
Study First
Subjects
:
sat
,
science
,
physics
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Linear momentum - p - commonly called "momentum" for short - is a vector quantity defined as the product of an object's mass - m - and its velocity - v.
Work-energy theorem
Momentum
Concave lens
Frequency
2. The energy of a particle rotating around an axis.
Thermal energy
Cross product
Rotational kinetic energy
Magnitude
3. States that the net work done on an object is equal to the object's change in kinetic energy.
Work-energy theorem
Center of mass
Basis vector
Rotational motion
4. The number of digits that have been accurately measured. When combining several measurements in a formula - the resulting calculation can only have as many significant digits as the measurement that has the smallest number of significant digits.
Bohr atomic model
Significant digits
Phase
Radioactive decay
5. The line perpendicular to a surface. There is only one normal for any given surface.
Kinetic theory of gases
Normal
Neutron
Legs
6. An object that moves about a stable equilibrium point and experiences a restoring force that is directly proportional to the oscillator's displacement.
Standing wave
Meson
Longitudinal waves
Simple harmonic oscillator
7. A vector quantity - equal to the rate of change of the angular velocity vector with time. It is typically given in units of rad/s2.
Coherent light
Longitudinal waves
Angular acceleration
Completely inelastic collision
8. A scalar quantity that tells us how fast an object is moving. It measures the rate of change in distance over time. Speed is to be contrasted with velocity in that there is no direction associated with speed.
Speed
Magnitude
Refracted ray
Basis vector
9. The series of standing waves supported by a string with both ends tied down. The first member of the series - called the fundamental - has two nodes at the ends and one anti-node in the middle. The higher harmonics are generated by placing an integra
Induced current
Radioactive decay
Angular period
Harmonic series
10. A vector quantity - or vector - is an object possessing - and fully described by - a magnitude and a direction. Graphically a vector is depicted as an arrow with its magnitude given by the length of the arrow and its direction given by where the arro
Force
Vector
Gamma decay
Tension force
11. A negatively charged particle that orbits the nucleus of the atom.
Electron
Constructive interference
Weight
Radioactivity
12. A law - || = - which states that the induced emf is the change in magnetic flux in a certain time.
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13. If two systems - A and B - are in thermal equilibrium and if B and C are also in thermal equilibrium - then systems A and C are necessarily in thermal equilibrium.
De Broglie wavelength
Zeroth Law of Thermodynamics
Electromagnetic wave
Electric generator
14. The principle stating that for any isolated system - linear momentum is constant with time.
Conservation of momentum
Heat engine
Magnitude
Law of reflection
15. Body diagram- Illustrates the forces acting on an object - drawn as vectors originating from the center of the object.
Constructive interference
Free
Concave mirror
Wave speed
16. A constant in the numerator of a formula.
Constant of proportionality
Dynamics
Simple harmonic oscillator
Distance
17. An object cannot be cooled to absolute zero.
Third Law of Thermodynamics
Free
De Broglie wavelength
Electric generator
18. The ray of light that is reflected from a mirror or other reflecting surface.
Reflected ray
Index of refraction
Normal force
Angle of refraction
19. A frequency - f - defined as the number of revolutions a rigid body makes in a given time interval. It is a scalar quantity commonly denoted in units of Hertz (Hz) or s-1.
Restoring force
Angular frequency
Right-hand rule
Tip
20. If the net torque acting on a rigid body is zero - then the angular momentum of the body is constant or conserved.
Conservation of Angular Momentum
Inertia
Frequency
Normal force
21. Done when energy is transferred by a force. The work done by a force F in displacing an object by s is W = F · s.
Work
Weightlessness
Nuclear fusion
Pressure
22. The points of maximum displacement along a wave. In traveling waves - the crests move in the direction of propagation of the wave. The crests of standing waves - also called anti-nodes - remain in one place.
Incident ray
Medium
Crest
Angular acceleration
23. A transfer of thermal energy. We don't speak about systems "having" heat - but about their "transferring" heat - much in the way that dynamical systems don't "have" work - but rather "do" work.
Heat
Gravitational constant
Constant of proportionality
Orbit
24. A form of radioactivity where an excited atom releases a photon of gamma radiation - thereby returning to a lower energy state. The atomic structure itself does not change in the course of gamma radiation.
Refraction
Nuclear fusion
Doppler shift
Gamma decay
25. In a right triangle - the sine of a given angle is the length of the side opposite the angle divided by the length of the hypotenuse.
Rarefaction
Sine
Axis of rotation
Period
26. Heat transfer by molecular collisions.
Beats
Hypotenuse
Conduction
System
27. Two quantities are inversely proportional if an increase in one results in a proportional decrease in the other - and a decrease in one results in a proportional increase in the other. In a formula defining a certain quantity - those quantities to wh
Phase change
Inversely proportional
Entropy
Coefficient of kinetic friction
28. A measure of the average kinetic energy of the molecules in a system. Temperature is related to heat by the specific heat of a given substance.
Reflect
Kinematics
Crest
Temperature
29. The force necessary to maintain a body in uniform circular motion. This force is always directed radially toward the center of the circle.
Centripetal force
Photoelectron
Equilibrium
Angular displacement
30. The force involved in beta decay that changes a proton to a neutron and releases an electron and a neutrino.
Restoring force
Weak nuclear force
Pulley
Coherent light
31. A collision in which momentum is conserved but kinetic energy is not.
Inelastic collision
Simple harmonic oscillator
Angle of incidence
Electromagnetic spectrum
32. An object is called radioactive if it undergoes radioactive decay.
Pulley
Radioactivity
Radiation
Transverse waves
33. The points of maximum negative displacement along a wave. They are the opposite of wave crests.
Torque
Optics
Magnitude
Trough
34. Waves carried by variations in air pressure. The speed of sound waves in air at room temperature and pressure is roughly 343 m/s.
Sound
Cross product
Hooke's Law
Impulse
35. An object at rest remains at rest - unless acted upon by a net force. An object in motion remains in motion - unless acted upon by a net force.
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36. Two quantities are directly proportional if an increase in one results in a proportional increase in the other - and a decrease in one results in a proportional decrease in the other. In a formula defining a certain quantity - those quantities to whi
Angular displacement
Hertz (Hz)
Latent heat of sublimation
Directly proportional
37. A pendulum consists of a bob connected to a rod or rope. At small angles - a pendulum's motion approximates simple harmonic motion as it swings back and forth without friction.
Latent heat of transformation
Pendulum
Tension force
Wave speed
38. The time - T - required for a rigid body to complete one revolution.
Weight
Heat
Angular period
Centripetal acceleration
39. The points midway between nodes on a standing wave - where the oscillations are largest.
Antinode
Normal
Reflect
Coefficient of linear expansion
40. In the graphical representation of vectors - the tail of the arrow is the blunt end (the end without a point).
First Law of Thermodynamics
Centripetal acceleration
Tail
Conservation of Angular Momentum
41. A mirror that is curved such that its center is farther from the viewer than the edges - such as the front of a spoon. Concave mirrors reflect light through a focal point.
Concave mirror
Mole
Unit vector
Deposition
42. The amplification of one wave by another - identical wave of the same sign. Two constructively interfering waves are said to be "in phase."
Newton's Third Law
Weightlessness
Constructive interference
Activity
43. A system with many parts in periodic - or repetitive - motion. The oscillations in one part cause vibrations in nearby parts.
Angular displacement
Distance
Wave
Meson
44. The amount of heat of a material required to raise the temperature of either one kilogram or one gram of that material by one degree Celsius. Different units may be used depending on whether specific heat is measured in s of grams or kilograms - and
Simple harmonic oscillator
Ground state
Standing wave
Specific heat
45. A sheet - film - or screen with a pattern of equally spaced slits. Typically the width of the slits and space between them is chosen to generate a particular diffraction pattern.
Period
Fundamental
Mass number
Diffraction grating
46. For a heat engine - the ratio of work done by the engine to heat intake. Efficiency is never 100%.
Efficiency
Reflect
Kepler's Second Law
Center of curvature
47. The amount of heat needed to raise the temperature of one gram of water by one degree Celsius. 1 cal = 4.19 J.
Vertex
Calorie
Angle of refraction
Superposition
48. Two oscillators that have the same frequency and amplitude - but reach their maximum displacements at different times - are said to have different phases. Similarly - two waves are in phase if their crests and troughs line up exactly - and they are o
Mass number
Isolated system
Phase
Vertex
49. The angle between a reflected ray and the normal.
Coefficient of volume expansion
Weight
Angle of reflection
Diffraction grating
50. The bending of light at the corners of objects or as it passes through narrow slits or apertures.
Diffraction
Equilibrium
Principal axis
Work function