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






2. A principle derived by Werner Heisenberg in 1927 that tells us that we can never know both the position and the momentum of a particle at any given time.






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






4. 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.






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






6. An electromagnetic wave of very high frequency.






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






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






9. 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






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






11. The force that binds protons and neutrons together in the atomic nucleus.






12. 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.






13. 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.






14. 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.






15. The force transmitted along a rope or cable.






16. Energy associated with an object's position in space - or configuration in relation to other objects. This is a latent form of energy - where the amount of potential energy reflects the amount of energy that potentially could be released as kinetic e






17. The force necessary to maintain a body in uniform circular motion. This force is always directed radially toward the center of the circle.






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






19. A rigid body's resistance to being rotated. The moment of inertia for a single particle is MR2 - where M is the mass of the rigid body and R is the distance to the rotation axis. For rigid bodies - calculating the moment of inertia is more complicate






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






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






23. The joule (J) is the unit of work and energy. A joule is 1 N · m or 1 kg · m2/s2.






24. A wave that interferes with its own reflection so as to produce oscillations which stand still - rather than traveling down the length of the medium. Standing waves on a string with both ends tied down make up the harmonic series.






25. 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






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






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






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






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






30. 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.






31. 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






32. 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.






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






34. 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.






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






36. Waves produced by a source that is moving with respect to the observer will seem to have a higher frequency and smaller wavelength if the motion is towards the observer - and a lower frequency and longer wavelength if the motion is away from the obse






37. Heat transfer via electromagnetic waves.






38. The experience of being in free fall. If you are in a satellite - elevator - or other free-falling object - then you have a weight of zero Newtons relative to that object.






39. 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.






40. The amplification of one wave by another - identical wave of the same sign. Two constructively interfering waves are said to be "in phase."






41. 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.






42. Given the trajectory of an object or system - the center of mass is the point that has the same acceleration as the object or system as a whole would have if its mass were concentrated at that point. In terms of force - the center of mass is the poin






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






44. 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.






45. An experiment in 1879 that showed that the speed of light is constant to all observers. Einstein used the results of this experiment as support for his theory of special relativity.






46. 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 -






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






48. The angle between a refracted ray and the line normal to the surface.






49. The amount heat necessary to cause a substance to undergo a phase transition.






50. 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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