An electron moves in a uniform magnetic field of 0.20 T, at 5.0 x 105 m/s. The magnetic force on it is a) 1.6 x 10-14 N b) 1.6 x 10-14 N [perpendicular to the velocity]
c) 1.6 x 10-14 N [perpendicular to the field] d) not enough information given

The extremely high temperatures needed to trigger nuclear fusion are proposed to be generated by laser irradiating a spherical pellet of deuterium and tritium fuel of diameter 1.8 mm. (a) determine the maximum fuel temperature that can be achieved by irradiating the pellet with 200 lasers, each producing a power of 550 w. the pellet has an absorptivity 0.3 and emissivity 0.8.

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below. your friend goes first, and you follow after he has dropped a distance of 2.0m. when your friend hits the water, is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.