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Test your basic knowledge |
SAT Subject Test: hysics
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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. A means of defining the direction of the cross product vector. To define the direction of the vector - position your right hand so that your fingers point in the direction of A - and then curl them around so that they point in the direction of B. Th
Momentum
Free
Mass number
Right-hand rule
2. The property by which a changing current in one coil of wire induces an emf in another.
Mutual Induction
Impulse
Frictional force
Center of curvature
3. The unit of magnetic flux - equal to one T · m2.
Snell's Law
Boiling point
Weber
Dynamics
4. For an oscillating spring - the restoring force exerted by the spring is directly proportional to the displacement. That is - the more the spring is displaced - the stronger the force that will pull toward the equilibrium position. This law is expres
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5. The sum of a system's potential and kinetic energy. In many systems - including projectiles - pulleys - pendulums - and motion on frictionless surfaces - mechanical energy is conserved. One important type of problem in which mechanical energy is not
Reflection
Mechanical energy
Neutron
Loudness
6. 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
Electronvolt
Vector
Radioactive decay
Rarefaction
7. The constant of proportionality in Newton's Law of Gravitation. It reflects the proportion of the gravitational force and - the product of two particles' masses divided by the square of the bodies' separation. N · m2/kg2.
Loudness
Gamma ray
Gravitational constant
Angular period
8. A rigid body's resistance to being rotated. The moment of inertia for a single particle is MR2 - where M is the mass of the rigid body and R is the distance to the rotation axis. For rigid bodies - calculating the moment of inertia is more complicate
Moment of inertia
Deposition
Electromagnetic wave
Photon
9. The points of maximum negative displacement along a wave. They are the opposite of wave crests.
Kinematics
Trough
Angular acceleration
Translational motion
10. A machine that operates by taking heat from a hot place - doing some work with that heat - and then exhausting the rest of the heat into a cool place. The internal combustion engine of a car is an example of a heat engine.
Heat engine
Absolute zero
Coherent light
Beta decay
11. When objects collide - each object feels a force for a short amount of time. This force imparts an impulse - or changes the momentum of each of the colliding objects. The momentum of a system is conserved in all kinds of collisions. Kinetic energy is
Amplitude
Nucleus
Kepler's Third Law
Collision
12. The temperature at which a material will change phase from liquid to gas or gas to liquid.
Legs
Vertex
Boiling point
Atomic number
13. 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.
Angular acceleration
Neutron
Activity
Free
14. There are a few versions of this law. One is that heat flows spontaneously from hot to cold - but not in the reverse direction. Another is that there is no such thing as a 100% efficient heat engine. A third states that the entropy - or disorder - of
Electric generator
Magnitude
Second Law of Thermodynamics
Angular period
15. Life- The amount of time it takes for one-half of a radioactive sample to decay.
Half
Isolated system
Oscillation
Newton's Second Law
16. A vector quantity - commonly denoted by the vector s - which reflects an object's change in spatial position. The displacement vector points from the object's starting position to the object's current position in space. If an object is moved from poi
Displacement
Faraday's Law
Mass
Deposition
17. The gravitational force exerted on a given mass.
Weight
Antinode
Beats
Inertia
18. Kinematics is the study and description of the motion of objects.
Kinematics
Real image
Translational motion
Instantaneous velocity
19. An electromagnetic wave of very high frequency.
Wave
Lenz's Law
Charles's Law
Gamma ray
20. The stable position of a system where the net force acting on the object is zero.
Kinetic friction
Reflected ray
Total internal reflection
Equilibrium position
21. An object cannot be cooled to absolute zero.
Deposition
Joule
Angle of reflection
Third Law of Thermodynamics
22. A vector of magnitude 1 along one of the coordinate axes. Generally - we take the basis vectors to be and - the vectors of length 1 along the x- and y-axes - respectively.
Basis vector
Decibel
Refraction
Faraday's Law
23. 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.
Significant digits
Decay constant
Vertex
Virtual image
24. A reference frame in which Newton's First Law is true. Two inertial reference frames move at a constant velocity relative to one another. According to the first postulate of Einstein's theory of special relativity - the laws of physics are the same i
Crest
Inertial reference frame
Newton's First Law
Work function
25. The substance that is displaced as a wave propagates through it. Air is the medium for sound waves - the string is the medium of transverse waves on a string - and water is the medium for ocean waves. Note that even if the waves in a given medium tra
Medium
Melting point
Rigid body
Newton's Law of Universal Gravitation
26. 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.
Zeroth Law of Thermodynamics
Atomic number
Concave mirror
Legs
27. A device that converts mechanical energy to electrical energy by rotating a coil in a magnetic field; sometimes called a "dynamo."
Inversely proportional
Harmonic series
Newton's Law of Universal Gravitation
Electric generator
28. The ray of light that is refracted through a surface into a different medium.
Tip
Normal
Refracted ray
Mutual Induction
29. The force necessary to maintain a body in uniform circular motion. This force is always directed radially toward the center of the circle.
Newton's Second Law
Phase change
Centripetal force
Dispersion
30. The center of a mirror or lens.
Virtual image
Newton's Third Law
Translational kinetic energy
Vertex
31. A conserved scalar quantity associated with the state or condition of an object or system of objects. We can roughly define energy as the capacity for an object or system to do work. There are many different types of energy - such as kinetic energy -
Nuclear fusion
Normal force
Energy
Axis of rotation
32. The bending of light as it passes from one medium to another. Light refracts toward the normal when going from a less dense medium into a denser medium and away from the normal when going from a denser medium into a less dense medium.
Mutual Induction
Refraction
Lenz's Law
Convection
33. The phenomenon of light bouncing off a surface - such as a mirror.
Equilibrium position
Angular momentum
Radioactive decay
Reflection
34. The units of frequency - defined as inverse-seconds (1 Hz = 1 s-1). "Hertz" can be used interchangeably with "cycles per second."
Newton
Dot product
Hertz (Hz)
Center of curvature
35. 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.
Momentum
Neutron number
Sine
Hooke's Law
36. The effect of force on rotational motion.
Snell's Law
Torque
Force
Concave lens
37. A constant - J · s - which is useful in quantum physics. A second constant associated with Planck's constant is .
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38. The index of refraction n = c/v of a substance characterizes the speed of light in that substance - v. It also characterizes - by way of Snell's Law - the angle at which light refracts in that substance.
Frictional force
Gamma ray
Gravitational constant
Index of refraction
39. Waves that oscillate in the same direction as the propagation of the wave. Sound is carried by longitudinal waves - since the air molecules move back and forth in the same direction the sound travels.
Kinematic equations
Tension force
Longitudinal waves
Focal length
40. The square of the amplitude of a sound wave is called the sound's loudness - or volume.
Scalar
Meson
Loudness
Reflected ray
41. The joule (J) is the unit of work and energy. A joule is 1 N · m or 1 kg · m2/s2.
Joule
Mass
Tension force
Latent heat of fusion
42. Objects that experience oscillatory or simple harmonic motion when distorted. Their motion is described by Hooke's Law.
Energy
Faraday's Law
Spring
Kepler's First Law
43. The ray of light that is reflected from a mirror or other reflecting surface.
Rotational kinetic energy
Reflected ray
Latent heat of transformation
Refracted ray
44. When a light ray strikes a surface - the angle of incidence is the angle between the incident ray and the normal.
Inelastic collision
Focal length
Angle of incidence
Component
45. The angle between a reflected ray and the normal.
Rutherford nuclear model
Photon
Angle of reflection
Law of reflection
46. In oscillation - a cycle occurs when an object undergoing oscillatory motion completes a "round-trip." For instance - a pendulum bob released at angle has completed one cycle when it swings to and then back to again. In period motion - a cycle is the
Cycle
Angular frequency
Kepler's Third Law
Chain reaction
47. Represented by R = 8.31 J/mol · K - the universal gas constant fits into the ideal gas law so as to relate temperature to the average kinetic energy of gas molecules.
Michelson-Morley experiment
Universal gas constant
Decibel
Conduction
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
Convex mirror
Induced current
Uniform circular motion
Phase
49. Two materials are in thermal equilibrium if they are at the same temperature.
Electromagnetic spectrum
Thermal equilibrium
Critical angle
De Broglie wavelength
50. A unit of measurement for energy on atomic levels. 1 eV = J.
Wave speed
Snell's Law
Electronvolt
Translational motion
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