Question
on the topic of magnetism. I need help with problem 10. not 11 or 9 in the picture. thanks!
lue dbtained in part (a) implies this is a signiicant b hegingie 9. (a) A cosmic ray proton m cosmic ray proton moving toward the Earth at 5.00x10 m/s experiences a magnetic force of 1.70x10-16 N. What is the strength of the magnetic field if there is a 45 angle between it and the proton's velocity? (b) Is the value obtained in part (a) consistent with the known strength of the Earth's magnetic field on its surface? Discuss 10. An electron moving at 4.00x 103 m/s in a 1.25-T magnetic field experiences a magnetic force of 1.40x 10-16 N. What angle does the velocity of the electron make with the magnetic field? There are two answers 11. (a) A physicist performing a sensitive measurement wants to limit the magnetic force on a moving charge in her equipment to less than 1.00x1012N. What is the greatest the charge can be if it moves at a maximum speed ot 30.0 m/s in the Earth's field? (b) Discuss whether it would be difficult to limit tne charge to less than the value found in (a) by comparing it with typical static electricity and noting that static is often absent 22.5 Force on a Moving Charge in a Magnetic Field: Examples and Applications If vou need additional support for these problems, see More
Explanation / Answer
10) v =4*10^3 m/s, B =1.25 T , F =1.4*10^-16 N, q =1.6*10^-19 C
F =qvBsin(theta)
1.4*10^-16 = (1.6*10^-19*4*10^3*1.25)sin(/theta)
theta = 10.1 degrees
theta = 350.1 degrees
