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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.
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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 property of a metal - the minimum frequency of electromagnetic radiation that is necessary to release photoelectrons from that metal.
Electromagnetic spectrum
Orbit
Threshold frequency
Mole
2. A particle - which consists of two protons and two neutrons. It is identical to the nucleus of a helium atom and is ejected by heavy particles undergoing alpha decay.
Kinetic energy
Alpha particle
Unit vector
Centripetal force
3. Another word for the frequency of a sound wave.
Radian
Pitch
Snell's Law
Virtual image
4. 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
Mechanical energy
Nucleus
Collision
Margin of error
5. The amount of error that's possible in a given measurement.
Distance
Margin of error
Maxima
Tip
6. The cosine of an angle in a right triangle is equal to the length of the side adjacent to the angle divided by the length of the hypotenuse.
Cosine
Coefficient of kinetic friction
Phase change
Nuclear fission
7. When dealing with reflection or refraction - the incident ray is the ray of light before it strikes the reflecting or refracting surface.
Photon
Diffraction
Incident ray
Power
8. The amount of heat necessary for a material undergoing sublimation to make a phase change from gas to solid or solid to gas - without a change in temperature.
Electromagnetic wave
Temperature
Activity
Latent heat of sublimation
9. The emf created by the motion of a charge through a magnetic field.
Right-hand rule
Tension force
Heat transfer
Motional emf
10. The cancellation of one wave by another wave that is exactly out of phase with the first. Despite the dramatic name of this phenomenon - nothing is "destroyed" by this interference—the two waves emerge intact once they have passed each other.
Medium
Pascals
Destructive interference
Mass
11. The application of kinematics to understand why objects move the way they do. More precisely - dynamics is the study of how forces cause motion.
Dynamics
Angle of reflection
Equilibrium position
Second Law of Thermodynamics
12. F = ma. The net force - F - acting on an object causes the object to accelerate - a. The magnitude of the acceleration is directly proportional to the net force on the object and inversely proportional to the mass - m - of the object.
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13. The path of each planet around the sun is an ellipse with the sun at one focus.
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14. Objects that experience oscillatory or simple harmonic motion when distorted. Their motion is described by Hooke's Law.
Third Law of Thermodynamics
Neutrino
Spring
Angular period
15. Given the trajectory of an object or system - the center of mass is the point that has the same acceleration as the object or system as a whole would have if its mass were concentrated at that point. In terms of force - the center of mass is the poin
Specific heat
Threshold frequency
Center of mass
Restoring force
16. An object is called radioactive if it undergoes radioactive decay.
Cosine
Newton's Second Law
Radioactivity
Neutron
17. The coefficient of static friction - for two materials is the constant of proportionality between the normal force and the maximum force of static friction. It is always a number between zero and one.
Mutual Induction
Coefficient of static friction
Motional emf
Focal point
18. 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
Vertex
Vector
Dispersion
Phase change
19. The phenomenon by which light traveling from a high n to a low n material will reflect from the optical interface if the incident angle is greater than the critical angle.
Total internal reflection
Universal gas constant
Constructive interference
Celsius
20. Energy associated with the state of motion. The translational kinetic energy of an object is given by the equation .
Kepler's Third Law
Kinetic energy
Normal force
Dot product
21. Kinematics is the study and description of the motion of objects.
Kinematics
Real image
Simple harmonic oscillator
Threshold frequency
22. The number - N - of neutrons in an atomic nucleus.
Gamma ray
Neutron number
Newton's First Law
Moment of inertia
23. The acceleration of a body experiencing uniform circular motion. This acceleration is always directed toward the center of the circle.
Right-hand rule
Latent heat of fusion
Latent heat of sublimation
Centripetal acceleration
24. A constant - - not to be confused with wavelength - that defines the speed at which a radioactive element undergoes decay. The greater is - the faster the element decays.
Wave
Decay constant
Reflect
Third Law of Thermodynamics
25. The line that every particle in the rotating rigid body circles about.
Medium
Angle of reflection
Axis of rotation
Equilibrium position
26. A negatively charged particle that orbits the nucleus of the atom.
Sine
Kinetic friction
Direction
Electron
27. The time it takes a system to pass through one cycle of its repetitive motion. The period - T - is the inverse of the motion's frequency - f = 1/T.
Angle of refraction
Margin of error
Minima
Period
28. A collision in which both kinetic energy and momentum are conserved.
Elastic collision
Thermal equilibrium
Newton's Third Law
Convex mirror
29. The center of a mirror or lens.
Transverse waves
Newton's Law of Universal Gravitation
Spectroscope
Vertex
30. The five equations used to solve problems in kinematics in one dimension with uniform acceleration.
Electromagnetic induction
Torque
Reflection
Kinematic equations
31. The principle stating that for any isolated system - linear momentum is constant with time.
Component
Centripetal acceleration
Heat
Conservation of momentum
32. An image created by a mirror or lens in such a way that light does actually come from where the image appears to be. If you place a screen in front of a real image - the image will be projected onto the screen.
Potential energy
Real image
Inversely proportional
Dot product
33. A principle derived by Werner Heisenberg in 1927 that tells us that we can never know both the position and the momentum of a particle at any given time.
Uncertainty principle
Loudness
Frictional force
Harmonic series
34. A collision in which the colliding particles stick together.
Pendulum
Completely inelastic collision
Boyle's Law
Real image
35. A wave on a string that is tied to a pole at one end will reflect back toward its source - producing a wave that is the mirror-image of the original and which travels in the opposite direction.
Dot product
Antinode
Reflect
Harmonic series
36. The distance between the focal point and the vertex of a mirror or lens. For concave mirrors and convex lenses - this number is positive. For convex mirrors and concave lenses - this number is negative.
Cosine
Focal length
Nuclear fission
Radian
37. 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.
Neutron number
Longitudinal waves
Threshold frequency
Virtual image
38. When an object is held in circular motion about a massive body - like a planet or a sun - due to the force of gravity - that object is said to be in orbit. Objects in orbit are in perpetual free fall - and so are therefore weightless.
Alpha particle
Orbit
Inversely proportional
Wave speed
39. 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.
Electromagnetic spectrum
Heat engine
Diffraction grating
Weak nuclear force
40. Given the period - T - and semimajor axis - a - of a planet's orbit - the ratio is the same for every planet.
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41. The force between two surfaces moving relative to one another. The frictional force is parallel to the plane of contact between the two objects and in the opposite direction of the sliding object's motion.
Uncertainty principle
Angular displacement
Dot product
Kinetic friction
42. 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
Amplitude
Second Law of Thermodynamics
Orbit
Simple harmonic oscillator
43. For a gas held at a constant temperature - pressure and volume are inversely proportional.
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44. An experiment in 1879 that showed that the speed of light is constant to all observers. Einstein used the results of this experiment as support for his theory of special relativity.
Induced current
Equilibrium
Reflected ray
Michelson-Morley experiment
45. The unit of magnetic flux - equal to one T · m2.
Weber
Virtual image
Newton's Law of Universal Gravitation
Concave lens
46. 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.
Kepler's First Law
Basis vector
Loudness
Center of mass
47. The force of gravity - F - between two particles of mass and - separated by a distance r - has a magnitude of - where G is the gravitational constant. The force is directed along the line joining the two particles.
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48. Heat transfer by molecular collisions.
Instantaneous velocity
Virtual image
Center of curvature
Conduction
49. A measure of force per unit area. Pressure is measured in N/m2 or Pa.
Diffraction grating
Newton
Pressure
Uncertainty principle
50. A system with many parts in periodic - or repetitive - motion. The oscillations in one part cause vibrations in nearby parts.
Constant of proportionality
Wave
Ground state
Compression
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