Question

consider a charged particle with a charge of 38.8 mC, a mass of 2.25 kg, and a velocity of 6.10 m/s moving parallel to a magnetic field of 36.5 T pointing towards the -z direction. Find the force on the moving particle

a. 19.4 N

b. 0 N

c. 41.9 N

d. 8.64 N

What happens to the resistivity of a metal wire if you double its length and double its diameter?

a. the resistivity halves

b. the resistivity doubles

c. the resistivity quadruples

d. the resistivity remains the same.

the critical angle for a beam of light passing from medium 1 to medium 2 is 45 degrees. This means that all light rays with an angle of incidence in medium 1 that is less than 45 will be

a. totally reflected

b. totally absorbed by medium 2

c. partially selected and partially transmitted

d. total transmitted

Answer 1