what charge should be placed on a coin of mass 5.7 g so that the electric force balances the weight of the coin near the earth's surface

Crowbar of 5 metre is used to lift an object of 800 metre if the effort arm is 200cm calculate the force applied

Ameter stick is pivoted at the 0.50-m line. a 3.0-kg object is hung from the 0.15-m line. where should a 5.0-kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)?

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these