30. A high-energy proton accelerator produces a proton beam with a radius of r = 0.90 mm. The beam current is I = 9.00 µA and is constant. The charge density of the beam is n = 6.00 x 10" protons per cubic meter. (a) What is the current density of the beam? (b) What is the drift velocity of the beam? (c) How much time does it take for 1.00 × 1010 protons to be emitted by the accelerator?
30. A high-energy proton accelerator produces a proton beam with a radius of r = 0.90 mm. The beam current is I = 9.00 µA and is constant. The charge density of the beam is n = 6.00 x 10" protons per cubic meter. (a) What is the current density of the beam? (b) What is the drift velocity of the beam? (c) How much time does it take for 1.00 × 1010 protons to be emitted by the accelerator?
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Transcribed Image Text:30. A high-energy proton accelerator produces a
proton beam with a radius of r = 0.90 mm. The
beam current is I = 9.00 µA and is constant.
The charge density of the beam is
n = 6.00 x 10" protons per cubic meter. (a)
What is the current density of the beam? (b)
What is the drift velocity of the beam? (c) How
much time does it take for 1.00 × 101º protons
to be emitted by the accelerator?
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