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Physics week 8

QuestionAnswer
What do you call atoms with the same atomic number but different mass numbers? Isotopes
What type of nucleus is an alpha particle? A helium nucleus
What is released during beta emission? Electrons
What is a chemical compound? A quantity of one type of molecule
What is the electric charge of an atom? Zero
Structures that absorb x-rays are called what, and structures that transmit x-rays are called what? Radiopaque absorb; radiolucent transmit
What is visible light identified by, and what are x-rays identified by? Visible light by wavelength; x-rays by energy
What is half the distance from crest to valley of a sine wave? Amplitude
The energy of a photon is proportional to what? Its frequency (directly)
Planck’s constant relates photon energy to what? Frequency
What does electrodynamics study? Mobile electric charges
What increases the magnetic intensity of an electromagnet? Adding an iron core
According to Faraday’s law, what determines the strength of the induced current? The strength of the magnetic field
What type of material becomes magnetic in an external magnetic field? Ferromagnetic material
* How do magnetic poles behave? Like poles repel; unlike poles attract
Created by: edwingp
 

 



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