Asolid cylinder of length l and radius r is made of an insulating material. this cylinder holds a net charge of q that is evenly distributed throughout the cylindrical volume. what is the volume charge density, rho, of this charged cylinder?

You are your friend move a new refrigerator into his kitchen. you apply a horizontal force of 252 n in the negative x direction to try and move the 56 kg refrigerator. the coefficient of static friction is 0.61. (a) how much static frictional force does the floor exert on the refrigerator? give both magnitude (in n) and direction. magnitude n direction (b) what maximum force (in n) do you need to apply before the refrigerator starts to move?