A proton moving with a velocity of 4.0 × 104 m/s along the +y-axis enters a magnetic field of 0.20 T directed towards the -x-axis. What is the magnitude of the magnetic force acting on the proton? (e = 1.60 × 10-19 C)
A) 8.0 × 10-15 N
B) 1.3 × 10-15 N
C) 0 N
D) 3.9 × 10-15 N
E) 2.6 × 10-15 N
B
You might also like to view...
Exhibit 5-1
A 2.30-kg mass is suspended from the ceiling and a 1.70-kg mass is suspended from the 2.30-kg mass, as shown. The tensions in the strings are labeled 
and 
.
?
?
Use this exhibit to answer the following question(s).
Refer to . A hand exerts an upward force of 6.70 N on the 1.70-kg mass. The magnitudes of the tensions are
A.
= 15.8 N; 
= 10.0 N.B.
= 15.8 N; = 16.7 N.C.
= 22.5 N; = 10.0 N.D.
= 22.5 N; = 16.7 N.E.
= 32.5 N; = 10.0 N.A dragster starts from rest and travels 1/4 mi in 6.70 s with constant acceleration. What is its velocity when it crosses the finish line?
A) 296 mi/h B) 269 mi/h C) 188 mi/h D) 135 mi/h
The nuclear process having by-products with least radioactivity is
A) fission. B) fusion. C) about the same for both.
When an unstable Zr nucleus undergoes alpha decay, the nucleus formed is that of
a. Zr. b. Mo. c. Y. d. Sr. e. Nb.