Physics, 22.04.2021 22:50 emilylittle2442
3. Commercial trucks cause about 18 000 lane-change and merging accidents per year in the
United States. To prevent many of them, a warning system covering blind spots is being
developed. The system uses electromagnetic waves of frequency 2.40 * 100 Hz. What is the
wavelength of these waves?
Answers: 2
Physics, 22.06.2019 22:50, cbogrett
Cyclotrons are widely used in nuclear medicine for producing short-lived radioactive isotopes. these cyclotrons typically accelerate h- (the hydride ion, which has one proton and two electrons) to an energy of 5 mev to 20 mev. this ion has a mass very close to that of a proton because the electron mass is negligible—about 1 2000 of the proton’s mass. a typical magnetic field in such cyclotrons is 1.9 t. (a) what is the speed of a 5.0-mev h-? (b) if the h- has energy 5.0 mev and b = 1.9 t, what is the radius of this ion’s circular orbit?
Answers: 1
Physics, 23.06.2019 14:00, mckenna426
What difference are found in the propagation of sound in the media solid, liquid and gas
Answers: 2
3. Commercial trucks cause about 18 000 lane-change and merging accidents per year in the
United S...
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