When electromagnetic fields interact with charged particles, (1 point) Group of answer choices

they become stronger because they gain protons

they become weaker because they gain electrons

electromagnetic force will occur

electromagnetic forces are canceled

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

Apulley with mass mp and a radius rp is attached to the ceiling, in a gravity field of 9.81 m/s2 and rotates with no friction about its pivot.

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.