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Terms in this set (42)
The splitting of large atomic nuclei into smaller atomic nuclei
Combining of smaller nuclei into larger atoms
The spontaneous emission of a helium nucleus from a large radioative element
The spontaneous emission of an electron from the nucleus of a radioactive atom. Atomic number is affected but mass number remains unchanged
the rate of energy dissipation in a circuit
The direction of an electric field
the same direction as the force on a positive charge
Brightest light bulb
resistors in parallel
Reflection of light
toward a normal line drawn perpendicularly to the surface of the medium it is entering if that medium has a higher index of refraction than the one it is existing
Mirror - Can form only virtual images that are upright (-f divergent)
The bending of light as it passes through a narrow opening, or slit
heating a metal
will cause the metal to expand
the volume of gas remains unchanged. No work is done since there is no change in volume
an object moving near light speed - a clock on the object will appear to move slowly
an object moving near light speed - length, in direction of motion, will appear to decrease if viewed by a stationary observer
an object moving near light speed - the mass of the object will appear to increase if seen by a stationary observer
A nuclear reaction
products usually have less mass than the reactants. The missing mass defect is converted into energy, which is released as a product.
directly proportional to photon energy
inversely proportional to photon energy
Electrons occupy exact energy levels. Photons of light absorbed and emitted by atoms have exact energies matching the difference between energy levels.
Absorption of Photons
add energy of photon to energy of electron, drawn as upward arrows in energy level diagrams
Emissions of Photons
electrons can experience a variety of drops on way to ground state. Each drop releases a different amount of energy and a different photon of light, drawn as downward arrows in energy level diagrams
Light energy is converted into electric energy.
change in this measures change in the system's total energy. It is tied to temperature changes
Mechanical change in energy involving changes in gas
Microscopic thermal energy transfer. no __ added or removed = adiabatic
The most natural state for a system in one in which the particles are randomly disordered. This is when ____ is high. It is associated with messiness and randomness.
Second law of thermodynamics
For an isolated system, the natural direction of heat flow from high temperature to low temp.
Heat Transfer - Solids
Heat Transfer - Fluids
Heat Transfer - light
Lens - when outside focus: real and inverted (+d,-h) when inside focus: virtual and Upright (-d,+h)
Mirror - when outside focus: real and inverted (+d,-h) when inside focus: virtual and Upright (-d,+h) (+f convergent)
Lens - Can form only virtual images that are upright (-f divergent)
Speed of Light
Medium dependent - greatest in a vacuum. Travels slower in denser mediums which is opposite of mechanical waves
Speed of Sound
Medium dependent - travels faster in denser mediums. Slowest in gases
Wave traveling in only one medium
Constant wave speed. Frequency and wavelength vary inversely
Wave changing mediums
Constant frequency. The velocity and wavelength directly proportional
The direction of the current reverses when,
-The poles of the magnet moving into a loop are switched.
-The magnet reverses direction.
-The magnet leaves the field as opposed to entering the field.
Electron between two charges
An electric field is always pointed away from a positive charge and toward a negative charge
Newton's first law
Objects at rest will remain at rest, and objects in motion will remain at constant velocity unless acted upon by a net non-zero force
Newton's second law
F = ma
Newton's third law
when objects interact, an equal and opposite force will always be in between them
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