[单选题]
A cyclotron of radius 0.20sr1y a(mnkn3 5 m accelerates protons in a 1.7-T magnetic fiegb):;i euje m.u/vz e50 rbzxlp22 *vuld. What is the frequency for the applied alterzb :;02e u5m z) /jvuue.2 *exlpibgrvnating voltage?
A. $0.26 \; MHz$
B. $2.6 \; MHz$
C. $26 \; MHz$
D. $260 \; MHz$
Post time 2024-1-22 02:15:01