What would happen to a light bulb if the voltage increased but the resistance stayed the same?

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?

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