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Questions and Answers
What happens to energy as frequency increases?
What happens to energy as frequency increases?
- Energy decreases
- Heat increases
- Heat decreases
- Energy increases (correct)
Compared to a beta particle, how does the size of an alpha particle compare?
Compared to a beta particle, how does the size of an alpha particle compare?
- Much smaller
- Much larger (correct)
- More penetrating
- None of the above
Where does electromagnetic radiation originate from?
Where does electromagnetic radiation originate from?
- Magnetism
- Something moving in space
- The atom (correct)
- Electricity
What does the formula v = fλ allow calculation of in an electromagnetic wave?
What does the formula v = fλ allow calculation of in an electromagnetic wave?
Which x-ray application was used in a dangerous manner for entertainment or business gain?
Which x-ray application was used in a dangerous manner for entertainment or business gain?
What is the unit of measure for time in the British system?
What is the unit of measure for time in the British system?
What does the formula E = hf demonstrate?
What does the formula E = hf demonstrate?
What is the momentum of a 30-kg object traveling at 2.5 m/s?
What is the momentum of a 30-kg object traveling at 2.5 m/s?
How many protons are there in an atom of oxygen (168O)?
How many protons are there in an atom of oxygen (168O)?
What are atoms with the same number of neutrons but different number of protons called?
What are atoms with the same number of neutrons but different number of protons called?
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Study Notes
Energy & Frequency
- As frequency increases, the energy of electromagnetic radiation increases
Alpha & Beta Particles
- Alpha particles are significantly larger than beta particles
Electromagnetic Radiation Origins
- Electromagnetic radiation originates from the movement of charged particles
Wave Speed Calculation
- The formula v = fλ allows the calculation of the speed of an electromagnetic wave, where:
- v is the speed of the wave
- f is the frequency of the wave
- λ is the wavelength of the wave
X-ray Application
- Fluoroscopy, an x-ray application, was dangerously used for entertainment and business gain
British Time Unit
- The unit of measure for time in the British system is the second
Energy-Frequency Relationship
- The formula E = hf demonstrates the direct relationship between energy (E) and frequency (f) of electromagnetic radiation, where h is Planck's constant
Momentum Calculation
- The momentum of a 30-kg object traveling at 2.5 m/s is 75 kg m/s, calculated using the formula momentum = mass x velocity
Oxygen Protons
- There are 8 protons in an atom of oxygen (168O)
Isobars
- Atoms with the same number of neutrons but different numbers of protons are called isobars
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