Acharge of 6.4 × 10–7 c experiences an electric force of 1.8 × 10–1 n. what is the electric field strength?
1.1 × 10–7 n/c
3.6 × 10–6 n/c
8.2 × 100 n/c
2.8 × 105 n/c

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

In the united states, tornadoes generally occur because of the freezing of ocean water underwater earthquakes meeting of cool and warm air masses shifting of warm and cool ocean currents