Arocket shoots up 123 meters. what is it initial velocity? how long is it ascending

Apositive point charge q is fixed on a very large horizontal frictionless tabletop. a second positive point charge q is released from rest near the stationary charge and is free to move. which statement best describes the motion of q after it is released? assume q stays on the table

According to the law of conservation of mass, in a chemical reaction the total starting mass of all the reactants equal the total final mass of all the products. true or false?

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle