[单选题]
A deuteron has the same charge as a proton but approxd9,- yj,jmevv 0tpo+fb;f. k yimatdjr9*5briwfz5 k*i 6w ely twice the proton mass. Suppose deuterons are being accelerated in a cyclotron in an 96r5*i kwr*ifb5wjd zorbit of radius 75 cm at a frequency of 8.0 Mhz. What magnetic field is needed?
A. $0.011 \; T$
B. $0.11 \; T$
C. $1.1 \; T$
D. $11 \; T$
Post time 2024-1-22 02:15:01