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physics
Question | Answer |
---|---|
an electron is gained or lost from an atom, that atom becomesa.ion b.new element c.isotope d.unstabel | an ion |
_____ is not a basic characteristic of wave equation a.velocity b. wavelenght c. frequency d. energy | energy |
phone wavelength is inversely proportional a. photon of velocity b. photon of energy c. photon of frequency d. none of above | to photon frequency |
Which of the following atomic particles cannot be further subdivided a.protons b.neutrons c.electrons d.all the above | electrons |
The unit of mass is the a.m/sec b.kg c.mm d.cc | kg |
a joule is a unit of measurement for a.mass b.energy c.matter d.gravity | energy |
radio waves, light and x rays are all examples of ___ energy a. nuclear b.thermal c.electrical d.electromagnetic | electromagnetic |
matter is measured in a. kilograms b. joules c.electron volt | kilograms |
if a wavelength of a beam of elcetromagnetic radiation increase by a factor of 2, then its frequency must a. double b. half c.increase 4x d. decrease by 1/2 | decrease by half |
charactersitic interactions may occur only when the incident elcetron interacts witha. inner shell e~ b.outer shell e~ c.force field of the nucleaus | inner shell e~ |
biological effects of ionizing radiation include all of the following accepta.cancer b. nonspecific c.bacterial infections d. developmetnal abnormalities | bacterial infections |
scattered photons from compton interactions are of no use in demonstrating radiographic structures of interest T/F | True |
a contaminant in teh silver halide crystal creates the a. sensitivity speck b. latent image c.manifest image d. image fog | sensitivity fog |