Physics Ch 14 W&L

Pythagorean Theorem can only be applied to what kind of triangle?

The sum of the angles of a right triangle is:

Field size and percentage depth dose are _________ proportional.

Units of measure:
Energy

What are the most commonly used energy units used in radiation therapy?

Units of measure:
Activity / Radioactivity

Units of measure:
Exposure

Units of measure:
Absorbed Dose

Units of measure:
Radiation dose equivalent

Note:
1.7 min is not 1 min 7 seconds!

The smallest unit of an element that retains the properties of that element.

The mass (weight) of a particle when it is not moving.

A short-ranged force that is responsible for interaction between neutron & proton & other particles in the hadron family.

The force responsible for interaction between particles with nonzero mass and has infinite range.

The class of elementary particles that contains electrons:

The class of elementary particles that contains protons, neutrons & other composite particles:

The force that is responsible for interaction between electrically charged particles and particles with nonzero magnetic moments, has infinite range.

Responsible for binding electrons & the nucleus and the binding of atoms to form molecules and the binding of molecules to form solids & liquids.

A short-ranged force that is responsible for interaction between elementary particles involving neutrinos or anti-neutrinos

The type of force that is responsible for radioactive decay of a neutron to a proton, an electron and an antineutrino, called beta decay.

Only _____ are affected by the Strong Force.

A.M.U.

Photon energy is ____________ proportional to photon wavelength

The maximum number of electrons allowed in the outer most shell:

What is the equation used to determine the number of electrons in a shell:

Nucleons

The _________ determines the energy and size of the atomic orbital.
Has only nonzero positive intergral values.

Electrons with the same ________ are said to belong to the same shell.

What is the SI unit of energy?

The minimum amount of energy needed to keep the nucleons together.
The lowest energy state of the atom.

When energy is imparted to the electrons of the atom, the electrons will move to higher-energy empty states and the atom will then reach an unstable state.

Electrons in the outermost shell of an atom:

When sufficient energy is given to an atom, an electron can overcome its binding energy and be completely removed from the atom.

Auger electron
(o-zhey)

The major force that holds the nucleus of an atom together:

The transmission of excess energy (in the form of photons) when an electron moves to fill a vacancy in another shell.

The force that tightly binds protons & neutrons to each other

The number of protons in the nucleus:
(z)

The total number of protons and neutrons in the nucleus:
(A)

^A    X
z

The total amount of energy that it takes to hold a nucleus together:

The binding energy divided by the atomic mass number:

Minimum amount of energy needed to keep the nucleons together:

Any packet of energy traveling through space at the speed of light (3x10⁸ m/s)

A photon has no ______ of its own or ________, it has only _______.

Photons exhibit the characteristics of a ______ at times and a ______ at others. This phenomenon is known as ___________.

The number of times a wave oscillates or cycles per second:

The physical distance between peaks of the wave:

All EM waves travel at the speed of light, so their ________ is a constant 3x10⁸ m/s.

same Z   
different A   
different N

different Z
same A
different N

different Z
different A
same N

same Z
same A
same N

If the number of protons in an atom increases, the number of electrons _______