Quick how are radioactive elements used for medical diagnosis? 1. the elements are placed in special cameras which record images from emitted radiation, like x-ray equipment. 2. some isotopes are absorbed in particular tissues and organs. 3. these radioactive isotopes act as tracers. the radiation from certain elements can penetrate the entire body and expose all internal organs to photographic film. 4. all of these.

Consider a resistor with color code “orange blue brown gold” and a measured value of 370 ω. determine the following: nominal value, tolerance, % error, and the probability of another resistor from the same manufacturing batch having a value closer to nominal than this one. use matlab or excel to evaluate the erf function.

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

What is a possible result of higher air temperature caused by global warming