A cyclotron with a radius of 1.0 m is to acceleratedeuterons (2H) to an energy of 12 MeV. (fl) What is therequired magnetic field? (b) What frequency is needed forthe voltage between the dees? (c) If the potential differencebetween the dees averages 22 kV, how many revolutions w illthe particles make before exiting? (d) How much time doesit take for one deuteron to go from start to exit? (e) Estimatehow far it travels during this time.
Motions of the Stars and Sun 1. Constellations and Asterisms a. Constellations: one of 88 sections in the sky i. All countries agree on these regions ii. Utility of these regions is that if there is a particular object, you can get a rough idea of where it is in the sky based on what region it is in b. Asterisms: 2. using asterisms to navigate the sky a. Polaris is the most important star (North Star) b. It is very close to the spin axis, so it doesn’t look like it moves, so people use it as a reference point c. Some other famous constellations are the Big Dipper, the small dipper (the North Star is part of this)