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.
Antinode
Tail
Energy
Angle of incidence


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
Component
Harmonic series
Heat
Gamma ray


4. Light such that all of the associated waves have the same wavelength and are in phase.
Coherent light
Index of refraction
Calorie
Radioactivity


5. The phenomenon of light bouncing off a surface - such as a mirror.
Radius of curvature
Legs
Hooke's Law
Reflection


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.
Harmonic series
Basis vector
Vertex
Mechanical energy


8. A vector quantity defined as the rate of change of the velocity vector with time.
Weight
Angular momentum
Hertz (Hz)
Acceleration


9. The temperature at which a material will change phase from liquid to gas or gas to liquid.
Pressure
Concave lens
Boiling point
Legs


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.
Significant digits
Centripetal force
Wave speed
De Broglie wavelength


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.
Latent heat of vaporization
Uniform circular motion
Instantaneous velocity
Doppler shift


12. The property by which a changing current in one coil of wire induces an emf in another.
Mutual Induction
Period
Polarization
Rotational motion


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.
Sound
Beats
Spring
Torque


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.
Electric generator
Chain reaction
Magnitude
Doppler shift


15. The unit of magnetic flux - equal to one T · m2.
Weber
Photoelectric effect
Angle of refraction
Work-energy theorem


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.
Convex lens
Nuclear fission
Neutrino
Momentum


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.
Transverse waves
Convex mirror
Half
Margin of error


18. Body diagram- Illustrates the forces acting on an object - drawn as vectors originating from the center of the object.
Potential energy
Elastic collision
Free
Angle of incidence


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
Weightlessness
Collision
Angle of reflection
Charles's Law


20. A small particle-like bundle of electromagnetic radiation.
Wave
Photon
Sound
Temperature


21. The center of an atom - where the protons and neutrons reside. Electrons then orbit this nucleus.
Transverse waves
Nucleus
Newton's Third Law
Reflection


22. When dealing with reflection or refraction - the incident ray is the ray of light before it strikes the reflecting or refracting surface.
Coefficient of kinetic friction
Incident ray
Inclined plane
Zeroth Law of Thermodynamics


23. A push or a pull that causes an object to accelerate.
Second Law of Thermodynamics
Universal gas constant
Force
Angular position


24. The line perpendicular to a surface. There is only one normal for any given surface.
Normal
Wave
Diffraction
Focal length


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.
Newton
Period
Frequency
Motional emf


26. The separation of different color light via refraction.
Electromagnetic induction
Convex mirror
Dispersion
Universal gas constant


27. For two given media - the smallest angle of incidence at which total internal reflection occurs.
Critical angle
Heat transfer
Collision
Sine


28. The stable position of a system where the net force acting on the object is zero.
Temperature
Refraction
Rotational kinetic energy
Equilibrium position


29. An experiment by Ernest Rutherford that proved for the first time that atoms have nuclei.
Gold foil experiment
Electromagnetic induction
Frictional force
Dot product


30. A neutrally charged particle that - along with protons - constitutes the nucleus of an atom.
Hypotenuse
Critical angle
Kepler's Third Law
Neutron


31. A process that aligns a wave of light to oscillate in one dimension rather than two.
First Law of Thermodynamics
Polarization
Traveling waves
Kinetic friction


32. With spherical mirrors - the radius of the sphere of which the mirror is a part.
Pulley
Normal force
Transformer
Radius of curvature


33. A quantity that possesses a magnitude but not a direction. Mass and length are common examples.
Scalar
Diffraction grating
Kinetic friction
Atomic number


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
Focal point
Photon
Unit vector
Phase change


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.
Period
Latent heat of sublimation
Momentum
Convection


36. Energy associated with the state of motion. The translational kinetic energy of an object is given by the equation .
Thermal equilibrium
Angle of reflection
Kinetic energy
Free


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
Angular momentum
Concave lens
Superposition
Strong nuclear force


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.
Activity
Speed
Cross product
Wave speed


39. A collision in which momentum is conserved but kinetic energy is not.
Alpha decay
Entropy
Diffraction
Inelastic collision


40. Heat transfer via the mass movement of molecules.
Melting point
Convection
Longitudinal waves
Neutron number


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.
Law of reflection
System
Wave speed
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.
Tangent
Mechanical energy
Wave
Motional emf


45. The two shorter sides of a right triangle that meet at the right angle.
Rotational motion
Legs
Directly proportional
Hypotenuse


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


47. A collision in which both kinetic energy and momentum are conserved.
Neutron
Bohr atomic model
Isotope
Elastic collision


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
Refracted ray
Planck's constant
Frictional force
Magnitude


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.
Unit vector
Beta particle
Mechanical energy
Convex mirror