Physics I final
Terms
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- Change 418 rad to millirads.
- 418,000 mRad
- What are the units of exposure in air?
-
Columbs/kilogram of air
or
Roentgen - What are the units of absorbed dose?
- Gray and Rad
- What are the units of dose equivalent?
- Sievert and Rem
- Does gravity affect mass?
- No
- What is the formula for calculating the number of electrons in an electron shell?
- 2n(squared)
- How many electrons are in the L shell of an atom?
- 8
- How many electrons can be in the outermost shell of an elecron?
- 8
- What is the term for the amount of energy needed to remove an elecrton from an atom?
- Binding energy
- What is the binding energy of the K shell of a Tungsten atom?
- 70 kev
- What is the binding energy of the L shell of a Tungsten atom?
- 11 kev
- What is atomic number? What is the symbol for atomic number?
-
The number of protons in an atom
Z - What is mass number? What is the symbol for mass number?
-
The number of protons and nuetrons in an atom
A - What is an isotope?
- Atoms of the same element that have a different number of electrons
- What is ionization?
- Removal or addition of an electron from an atom
- What is the ability to do work?
- Energy
- Name the seven forms of energy.
- Potential, kinetic, thermal, chemical, electrical, nuclear, and electromagnetic
- What type of energy is released when a wave is absorbed?
- Electromagnetic
- What is the velocity of electromagnetic radiation?
- Speed of light
- What is the symbol for the speed of light? How fast is the speed of light?
-
c
186,000 miles/s; 3x10(8)m/s;
3x10(10)cm/s - What is wavelength?
- The distance between one point on a wave and the same point on the next wave
- What is frequency?
- Number of waves per second
- How are frequency and wavelength related?
- Inversely related
- What is the formula for velocity?
- Velocity = frequency x wavelength
- Who discovered x-rays and when?
- Wilhelm Conrad Roentgen on November 8, 1895
- True or false. X-rays all have the same energy and wavelength.
- False
- True or false. X-rays all have the same velocity.
- True
- Can you focus x-rays with a lens?
- No
- What is the study of the distribution of charged particles?
- Electrification
- In what 3 ways may an object be electrified?
- Friction, contact, and induction