Author Question: The force on a charged particle created by its motion in a magnetic field is maximum at what angle ... (Read 55 times)

Jipu 123 · **on:** Jul 28, 2018

The force on a charged particle created by its motion in a magnetic field is maximum at what angle between the particle velocity and field?
a. 90
c. zero
b. 180
d. 45

Question 2

Legend says that Archimedes, in determining whether or not the king's crown was made of pure gold, measured its volume by the water displacement method. If the density of gold is 19.3 g/cm3, and the crown's mass is 440 g, what volume would be necessary to prove that it is pure gold?
a. 31.1 cm3
c. 22.8 cm3
b. 114 103 cm3
d. 1.81 10-2 cm3