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SAT Subject Test: Physics
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SAT Subject Test: Physics
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25 Questions

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

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

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

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

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

6. The ratio of the size of the image produced by a mirror or lens to the size of the original object. This number is negative if the image is upside-down.

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

8. The amount of heat necessary for a material undergoing sublimation to make a phase change from gas to solid or solid to gas - without a change in temperature.

9. 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

10. 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.

11. When an object is held in circular motion about a massive body - like a planet or a sun - due to the force of gravity - that object is said to be in orbit. Objects in orbit are in perpetual free fall - and so are therefore weightless.

12. The amount of heat needed to raise the temperature of one gram of water by one degree Celsius. 1 cal = 4.19 J.

13. 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

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

15. The points of maximum negative displacement along a wave. They are the opposite of wave crests.

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

17. In a right triangle - the tangent of a given angle is the length of the side opposite the angle divided by the length of the side adjacent to the triangle.

18. A form of vector multiplication - where two vectors are multiplied to produce a third vector. The cross product of two vectors - A and B - separated by an angle - - is - where is a unit vector perpendicular to both A and B. To deine which direction

19. An image created by a mirror or lens in such a way that light does actually come from where the image appears to be. If you place a screen in front of a real image - the image will be projected onto the screen.

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

21. The amount of heat necessary to transform a solid at a given temperature into a liquid of the same temperature - or the amount of heat needed to be removed from a liquid of a given temperature to transform it into a solid of the same temperature.

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

23. A device made of two coils - which converts current of one voltage into current of another voltage. In a step-up transformer - the primary coil has fewer turns than the secondary - thus increasing the voltage. In a step-down transformer - the seconda

24. The current induced in a circuit by a change in magnetic flux.

25. 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

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