Physics, 04.12.2019 02:31 Darkknighta26
Medical cyclotrons need efficient sources of protons to inject into their center. in one kind of ion source, hydrogen atoms (i. e., protons with one orbiting electron) are fed into a chamber where there is a strong magnetic field. electrons in this chamber are trapped in tight orbits, which greatly increases the chance that they will collide with a hydrogen atom and ionizes it. one such source uses a magnetic field of 90 mt, and the electrons' kinetic energy is 2.0 ev. if the electrons travel in a plane perpendicular to the field, what is the radius of their orbits?
Answers: 2
Physics, 21.06.2019 16:00
Suppose you use a machine that gives you a mechanical advantage of 2 to achieve an output force of 30newtons what must the input force be
Answers: 3
Physics, 21.06.2019 17:10
An air-standard stirling cycle operates with a maximum pressure of 600 psia and a minimum pressure of 10 psia. the maximum volume of the air is 10 times the minimum volume. the temperature during the heat rejection process is 100°f. calculate the specific heat added to and rejected by this cycle, as well as the net specific work produced by the cycle. use constant specific heats at room temperature. the properties of air at room temperature are r
Answers: 2
Physics, 22.06.2019 00:00
Astate of matter all that has define volume and can flow is a(n)
Answers: 3
Physics, 22.06.2019 10:30
Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?
Answers: 2
Medical cyclotrons need efficient sources of protons to inject into their center. in one kind of ion...
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