Calculate the effective radiation dosage (in rems) for a 73-kg person who is exposed to 3.0 x 109 particles of alpha radiation. assume that 79% of the radiation is absorbed, each alpha particle has an energy of 7.7x10 j, and that the rbe of the alpha particles is 15. note that rbe is sometimes called quality factor, abbreviated as q. number 0.03465 rem

Which of the following would not be taken into consideration when describing the quality of a sound

First, launch the video below. you will be asked to use your knowledge of physics to predict the outcome of an experiment. then, close the video window and answer the question at right. you can watch the video again at any point. part a as in the video, we apply a charge +q to the half-shell that carries the electroscope. this time, we also apply a charge –q to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? view available hint(s) as in the video, we apply a charge + to the half-shell that carries the electroscope. this time, we also apply a charge – to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? it deflects more than it did at the end of the video. it deflects the same amount as at end of the video. it does not deflect at all. it deflects less than it did at the end of the video. submit

What are similarities and differences of reflection, refraction, diffraction and absorption?