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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 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.






2. The longest side of a right triangle - opposite to the right angle.






3. The emf created by the motion of a charge through a magnetic field.






4. A transfer of thermal energy. We don't speak about systems "having" heat - but about their "transferring" heat - much in the way that dynamical systems don't "have" work - but rather "do" work.






5. In an interference or diffraction pattern - the places where there is the least light.






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

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7. In the Bohr model of the atom - the state in which an electron has the least energy and orbits closest to the nucleus.






8. 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






9. 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






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

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






12. If the net torque acting on a rigid body is zero - then the angular momentum of the body is constant or conserved.






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






14. The straight line that runs through the focal point and the vertex of a mirror or lens.






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






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






17. For a reflected light ray - . In other words - a ray of light reflects of a surface in the same plane as the incident ray and the normal - and at an angle to the normal that is equal to the angle between the incident ray and the normal.






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






19. 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






20. 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.






21. 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.






22. Also called a converging lens - a lens that is thicker in the middle than at the edges. Convex lenses refract light through a focal point.






23. 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 - .






24. 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






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






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






27. 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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28. 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






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






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






31. The angle between a reflected ray and the normal.






32. 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.






33. 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.






34. 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.






35. The model of the atom according to which negatively charged electrons orbit a positively charged nucleus. This model was developed by Ernest Rutherford in light of the results from his gold foil experiment.






36. Another word for the frequency of a sound wave.






37. The tendency of an object to remain at a constant velocity - or its resistance to being accelerated. Newton's First Law is alternatively called the Law of Inertia because it describes this tendency.






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






39. 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.






40. The bending of light at the corners of objects or as it passes through narrow slits or apertures.






41. 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.






42. Heat transfer via electromagnetic waves.






43. 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.






44. A constant in the numerator of a formula.






45. 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.






46. 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






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






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






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. The separation of different color light via refraction.