You pull a block at constant speed across a table with 5 N of force. What is the force of friction?

A-4.60 μc charge is moving at a constant speed of 6.80×105 m/s in the +x−direction relative to a reference frame. at the instant when the point charge is at the origin, what is the magnetic-field vector it produces at the following points.

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

Asher cycles 12 miles in 16 hours. what is his speed?