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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 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.






2. 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.






3. With spherical mirrors - the center of the sphere of which the mirror is a part. All of the normals pass through it.






4. A system that no external net force acts upon. Objects within the system may exert forces upon one another - but they cannot receive any impulse from outside forces. Momentum is conserved in isolated systems.






5. The effect of force on rotational motion.






6. The separation of different color light via refraction.






7. When electromagnetic radiation shines upon a metal - the surface of the metal releases energized electrons. The way in which these electrons are released contradicts classical theories of electromagnetic radiation and supports the quantum view accord






8. Essentially a restatement of energy conservation - it states that the change in the internal energy of a system is equal to the heat added plus the work done on the system.






9. A unit of measurement for energy on atomic levels. 1 eV = J.






10. The distance between successive wave crests - or troughs. Wavelength is measured in meters and is related to frequency and wave speed by = v/f.






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






12. The path of each planet around the sun is an ellipse with the sun at one focus.

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13. The motion of a body in a circular path with constant speed.






14. A pulley is a simple machine that consists of a rope that slides around a disk or block.






15. A scalar quantity. If an object is moved from point A to point B in space along path AB - the distance that the object has traveled is the length of the path AB. Distance is to be contrasted with displacement - which is simply a measure of the distan






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






17. 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






18. The five equations used to solve problems in kinematics in one dimension with uniform acceleration.






19. Occurs when every point in the rigid body moves in a circular path around a line called the axis of rotation.






20. If a line is drawn from the sun to the planet - then the area swept out by this line in a given time interval is constant.

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21. 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.






22. The force transmitted along a rope or cable.






23. 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.






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






25. In reference to oscillation - amplitude is the maximum displacement of the oscillator from its equilibrium position. Amplitude tells how far an oscillator is swinging back and forth. In periodic motion - amplitude is the maximum displacement in each






26. A number - Z - associated with the number of protons in the nucleus of an atom. Every element can be defined in s of its atomic number - since every atom of a given element has the same number of protons.






27. 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.






28. When a light ray strikes a surface - the angle of incidence is the angle between the incident ray and the normal.






29. 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.






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






31. 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






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






33. The amount of heat necessary to transform a liquid at a given temperature into a gas of the same temperature - or the amount of heat needed to be taken away from a gas of a given temperature to transform it into a liquid of the same temperature.






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






35. A unit for measuring angles; also called a "rad." 2p rad = 360º.






36. 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.






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. The application of kinematics to understand why objects move the way they do. More precisely - dynamics is the study of how forces cause motion.






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






40. 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.






41. 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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42. A constant in the numerator of a formula.






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






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






45. 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.






46. An equation - PV = nRT - that relates the pressure - volume - temperature - and quantity of an ideal gas. An ideal gas is one that obeys the approximations laid out in the kinetic theory of gases.






47. Heat transfer by molecular collisions.






48. A vector quantity - equal to the rate of change of the angular velocity vector with time. It is typically given in units of rad/s2.






49. A reference frame in which Newton's First Law is true. Two inertial reference frames move at a constant velocity relative to one another. According to the first postulate of Einstein's theory of special relativity - the laws of physics are the same i






50. 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.