Question 1 10 pts What is the direction of the magnetic force on a negative char

Question

Question 1 10 pts What is the direction of the magnetic force on a negative charge that moves as shown in the figure? into the page right (East) D left (West) D out of the page D Question 2 10 pts A cosmic ray electron moves at 7.4 x 106 m/s perpendicular to the Earth's magnetic field at an altitude where field strength is 1.29 10-5 T. What is the radius (in meters) of the circular path the electron follows? The charge of an electron is 1.6 x 1019 C and its mass is 9.11 x 1031m. Your answer should be a number with two decimal places, do not include the unit.

Explanation / Answer

Question 1

Direction of force is given by v x B ,

So answer is into the page

Question 2

F = qvB = mv^2 /R

R = mv/ qB

Given,

m = 9.11 * 10 ^ -31 kg

q = 1.6 * 10^-19 C

v = 7.4* 10^6 m/s

B = 1.29 * 10^-5 T

R = mv/ qB = (9.11 * 10 ^ -31) * (7.4* 10^6) / (1.6 * 10^-19) * (1.29 * 10^-5)

= 6.741 * 10^-24 / 2.064 * 10 ^-24 = 3.2659

Radius = 3.26 m

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.