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






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. Any vector can be expressed as the sum of two mutually perpendicular component vectors. Usually - but not always - these components are multiples of the basis vectors - and ; that is - vectors along the x-axis and y-axis. We define these two vectors






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






5. The phenomenon of light bouncing off a surface - such as a mirror.






6. 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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7. The center of a mirror or lens.






8. A vector quantity defined as the rate of change of the velocity vector with time.






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






10. 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.






11. 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.






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






13. Waves carried by variations in air pressure. The speed of sound waves in air at room temperature and pressure is roughly 343 m/s.






14. A property common to both vectors and scalars. In the graphical representation of a vector - the vector's magnitude is equal to the length of the arrow.






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






16. 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.






17. Waves in which the medium moves in the direction perpendicular to the propagation of the wave. Waves on a stretched string - water waves - and electromagnetic waves are all examples of transverse waves.






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






19. 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






20. A small particle-like bundle of electromagnetic radiation.






21. The center of an atom - where the protons and neutrons reside. Electrons then orbit this nucleus.






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






23. A push or a pull that causes an object to accelerate.






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






25. The number of cycles executed by a system in one second. Frequency is the inverse of period - f = 1/T. Frequency is measured in hertz - Hz.






26. The separation of different color light via refraction.






27. For two given media - the smallest angle of incidence at which total internal reflection occurs.






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






29. An experiment by Ernest Rutherford that proved for the first time that atoms have nuclei.






30. A neutrally charged particle that - along with protons - constitutes the nucleus of an atom.






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






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






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






34. The point of a mirror or lens where all light that runs parallel to the principal axis will be focused. Concave mirrors and convex lenses are designed to focus light into the focal point. Convex mirrors and concave lenses focus light away from the fo






35. 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.






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






37. A vector quantity - L - that is the rotational analogue of linear momentum. For a single particle - the angular momentum is the cross product of the particle's displacement from the axis of rotation and the particle's linear momentum - . For a rigid






38. In radioactive substances - the number of nuclei that decay per second. Activity - A - will be larger in large samples of radioactive material - since there will be more nuclei.






39. A collision in which momentum is conserved but kinetic energy is not.






40. Heat transfer via the mass movement of molecules.






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

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42. 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.






43. Relates the angle of incidence to the angle of refraction: .

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44. A system with many parts in periodic - or repetitive - motion. The oscillations in one part cause vibrations in nearby parts.






45. The two shorter sides of a right triangle that meet at the right angle.






46. A scale for measuring temperature - defined such that 0K is the lowest theoretical temperature a material can have. 273K = 0ºC.






47. A collision in which both kinetic energy and momentum are conserved.






48. A force caused by the roughness of two materials in contact - deformations in the materials - and a molecular attraction between the materials. Frictional forces are always parallel to the plane of contact between two surfaces and opposite the direct






49. 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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50. A particle - identical to an electron. Beta particles are ejected from an atom in the process of beta decay.







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