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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. 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.






2. A wedge or a slide. The dynamics of objects sliding down inclined planes is a popular topic on SAT II Physics.






3. An area of high air pressure that acts as the wave trough for sound waves. The spacing between successive rarefactions is the wavelength of sound - and the number of successive areas of rarefaction that arrive at the ear per second is the frequency -






4. 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.






5. For a heat engine - the ratio of work done by the engine to heat intake. Efficiency is never 100%.






6. The disorder of a system.






7. The state of a nonrotating object upon whom the net torque acting is zero.






8. 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 -






9. 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.






10. A process that aligns a wave of light to oscillate in one dimension rather than two.






11. The temperature at which a material will change phase from liquid to gas or gas to liquid.






12. The stable position of a system where the net force acting on the object is zero.






13. When dealing with reflection or refraction - the incident ray is the ray of light before it strikes the reflecting or refracting surface.






14. The force transmitted along a rope or cable.






15. A form of radioactive decay where a heavy element emits an alpha particle and some energy - thus transforming into a lighter - more stable - element.






16. The energy of a particle moving in space. It is defined in s of a particle's mass - m - and velocity - v - as (1/2)mv2.






17. A mirror that is curved such that its center is closer to the viewer than the edges - such as a doorknob. Convex mirrors reflect light away from a focal point.






18. A vector quantity - - that reflects the change of angular displacement with time - and is typically given in units of rad/s. To find the direction of the angular velocity vector - take your right hand and curl your fingers along the particle or body






19. 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.






20. The building blocks of all matter - quarks are the constituent parts of protons - neutrons - and mesons.






21. An almost massless particle of neutral charge that is released along with a beta particle in beta decay.






22. A class of elementary particle whose mass is between that of a proton and that of an electron. A common kind of meson is the pion.






23. In a right triangle - the tangent of a given angle is the length of the side opposite the angle divided by the length of the side adjacent to the triangle.






24. 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.






25. The line perpendicular to a surface. There is only one normal for any given surface.






26. In an interference or diffraction pattern - the places where there is the most light.






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






28. Life- The amount of time it takes for one-half of a radioactive sample to decay.






29. 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.






30. Objects that experience oscillatory or simple harmonic motion when distorted. Their motion is described by Hooke's Law.






31. 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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32. 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.






33. The force that causes simple harmonic motion. The restoring force is always directed toward an object's equilibrium position.






34. A constant in the numerator of a formula.






35. In the graphical representation of vectors - the tip of the arrow is the pointy end.






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






37. An image created by a mirror or lens in such a way that light does not actually come from where the image appears to be.






38. Also called a diverging lens - a lens that is thinner in the middle than at the edges. Concave lenses refract light away from a focal point.






39. The standing wave with the lowest frequency that is supported by a string with both ends tied down is called the fundamental - or resonance - of the string. The wavelength of the fundamental is twice the length of the string - .






40. 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.






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






42. 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






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






44. Energy cannot be made or destroyed; energy can only be changed from one place to another or from one form to another.






45. 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.






46. 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.






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






48. The velocity at any given instant in time. To be contrasted with average velocity - which is a measure of the change in displacement over a given time interval.






49. A law - || = - which states that the induced emf is the change in magnetic flux in a certain time.

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50. A body or set of bodies that we choose to analyze as a group.







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