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SAT Subject Test: hysics

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. 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






2. 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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3. When two waves of slightly different frequencies interfere with one another - they produce a "beating" interference pattern that alternates between constructive (in-phase) and destructive (out-of-phase). In the case of sound waves - this sort of inte






4. The speed at which a wave crest or trough propagates. Note that this is not the speed at which the actual medium (like the stretched string or the air particles) moves.






5. The points midway between nodes on a standing wave - where the oscillations are largest.






6. The amount of error that's possible in a given measurement.






7. Two materials are in thermal equilibrium if they are at the same temperature.






8. A measurement of a body's inertia - or resistance to being accelerated.






9. A transfer of thermal energy from one system to another.






10. 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.






11. An electromagnetic wave of very high frequency.






12. 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 -






13. 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.






14. A back-and-forth movement about an equilibrium position. Springs - pendulums - and other oscillators experience harmonic motion.






15. Body diagram- Illustrates the forces acting on an object - drawn as vectors originating from the center of the object.






16. The effect of force on rotational motion.






17. A measure of force per unit area. Pressure is measured in N/m2 or Pa.






18. The mass difference between a nucleus and the sum of the masses of the constituent protons and neutrons.






19. The property by which a changing current in one coil of wire induces an emf in another.






20. 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.






21. 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






22. 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






23. The center of a mirror or lens.






24. 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.






25. The amount of energy that metal must absorb before it can release a photoelectron from the metal.






26. 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.






27. 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.






28. Energy associated with the state of motion. The translational kinetic energy of an object is given by the equation .






29. 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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30. A form of vector multiplication - where two vectors are multiplied to produce a third vector. The cross product of two vectors - A and B - separated by an angle - - is - where is a unit vector perpendicular to both A and B. To deine which direction






31. The net change - - in a point's angular position - . It is a scalar quantity.






32. A constant - J · s - which is useful in quantum physics. A second constant associated with Planck's constant is .

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33. The unit of magnetic flux - equal to one T · m2.






34. The longest side of a right triangle - opposite to the right angle.






35. The dot product of the area and the magnetic field passing through it. Graphically - it is a measure of the number and length of magnetic field lines passing through that area. It is measured in Webers (Wb).






36. The movement of a rigid body's center of mass in space.






37. The ray of light that is reflected from a mirror or other reflecting surface.






38. 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.






39. 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






40. 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.






41. The current induced in a circuit by a change in magnetic flux.






42. A form of vector multiplication - where two vectors are multiplied to produce a scalar. The dot product of two vectors - A and B - is expressed by the equation A · B = AB cos .






43. States that the current induced in a circuit by a change in magnetic flux is in the direction that will oppose that change in flux. Using the right-hand rule - point your thumb in the opposite direction of the change in magnetic flux. The direction y

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44. The line that every particle in the rotating rigid body circles about.






45. A vector quantity defined as the product of the force acting on a body multiplied by the time interval over which the force is exerted.






46. The amount of heat necessary to transform a solid at a given temperature into a liquid of the same temperature - or the amount of heat needed to be removed from a liquid of a given temperature to transform it into a solid of the same temperature.






47. The process by which unstable nuclei spontaneously release particles and/or energy so as to come to a more stable arrangement. The most common forms of radioactive decay are alpha decay - beta decay - and gamma decay.






48. Heat transfer via electromagnetic waves.






49. 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.






50. The number - N - of neutrons in an atomic nucleus.







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