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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 property of a vector that distinguishes it from a scalar: while scalars have only a magnitude - vectors have both a magnitude and a direction. When graphing vectors in the xy-coordinate space - direction is usually given by the angle measured cou






2. 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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3. The lowest theoretical temperature a material can have - where the molecules that make up the material have no kinetic energy. Absolute zero is reached at 0 K or -273º C.






4. 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.






5. 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






6. 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






7. The square of the amplitude of a sound wave is called the sound's loudness - or volume.






8. The ray of light that is refracted through a surface into a different medium.






9. A transverse traveling wave created by the oscillations of an electric field and a magnetic field. Electromagnetic waves travel at the speed of light - m/s. Examples include microwaves - X rays - and visible light.






10. A logorithmic unit for measuring the volume of sound - which is the square of the amplitude of sound waves.






11. The process by which a solid turns directly into gas - because it cannot exist as a liquid at a certain pressure.






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






13. 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.






14. The effect of force on rotational motion.






15. A quantity that possesses a magnitude but not a direction. Mass and length are common examples.






16. An object that retains its overall shape - meaning that the particles that make up the rigid body stay in the same position relative to one another.






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






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






19. The coefficient of kinetic friction - - for two materials is the constant of proportionality between the normal force and the force of kinetic friction. It is always a number between zero and one.






20. The spectrum containing all the different kinds of electromagnetic waves - ranging in wavelength and frequency.






21. The units of frequency - defined as inverse-seconds (1 Hz = 1 s-1). "Hertz" can be used interchangeably with "cycles per second."






22. A vector quantity defined as the rate of change of the displacement vector with time. It is to be contrasted with speed - which is a scalar quantity for which no direction is specified.






23. The time - T - required for a rigid body to complete one revolution.






24. An area of high air pressure that acts as the wave crest for sound waves. The spacing between successive compressions is the wavelength of sound - and the number of successive areas of compression that arrive at the ear per second is the frequency -






25. With spherical mirrors - the radius of the sphere of which the mirror is a part.






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






27. A property of a metal - the minimum frequency of electromagnetic radiation that is necessary to release photoelectrons from that metal.






28. The force involved in beta decay that changes a proton to a neutron and releases an electron and a neutrino.






29. A positively charged particle that - along with the neutron - occupies the nucleus of the atom.






30. 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






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






32. 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.






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






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






35. The property by which a charge moving in a magnetic field creates an electric field.






36. Light such that all of the associated waves have the same wavelength and are in phase.






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






38. Indicates how "bouncy" or "stiff" a spring is. More specifically - the spring constant - k - is the constant of proportionality between the restoring force exerted by the spring - and the spring's displacement from equilibrium. The greater the value






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






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






41. Kinematics is the study and description of the motion of objects.






42. 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.






43. The force between two surfaces that are not moving relative to one another. The force of static friction is parallel to the plane of contact between the two objects and resists the force pushing or pulling on the object.






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






45. The points on a standing wave where total destructive interference causes the medium to remain fixed at its equilibrium position.






46. A nuclear reaction in which a high-energy neutron bombards a heavy - unstable atomic nucleus - causing it to split into two smaller nuclei - and releasing some neutrons and a vast amount of energy at the same time






47. 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






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






49. An object is called radioactive if it undergoes radioactive decay.






50. A constant in the numerator of a formula.







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