Viewers of Star Trek have heard of an antimatter drive on the Starship Enterprise. One possibil- ity for such a futuristic energy source is to store antimatter charge particles in a vacuum chamber, circulating in a magnetic field, and then extract them as needed. Antimatter annihilates normal matter, producing pure energy. a) What strength magnetic field is needed to hold antiprotons, moving at 5.0 × 107 m/s in a circular path 2.00 m in radius? Antiprotons have the same mass as protons (mp = 1.673 × 10−27 kg) but the opposite (negative) charge. b) Is this field strength obtainable with today’s technology or is it a futuristic possibility?

College Physics
11th Edition
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Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Viewers of Star Trek have heard of an antimatter drive on the Starship Enterprise. One possibil-
ity for such a futuristic energy source is to store antimatter charge particles in a vacuum chamber,
circulating in a magnetic field, and then extract them as needed. Antimatter annihilates normal
matter, producing pure energy.
a) What strength magnetic field is needed to hold antiprotons, moving at 5.0 × 107 m/s in
a circular path 2.00 m in radius? Antiprotons have the same mass as protons (mp =
1.673 × 10−27 kg) but the opposite (negative) charge.
b) Is this field strength obtainable with today’s technology or is it a futuristic possibility?

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