A 3.0kg and 5.0kg box rest side by side on a smooth, level floor. Ahorizontal force of 32N is applied to the 3.0 kg box pushing itagainst the 5.0 kg box and as a result both boxes slide along thefloor. How large is the contact force between the two boxes?

a) 12N
b) 20N
c) 32N
d) 0N

What is the difference between electrically neutral objects and electrically charged objects

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies. molten iron has a density of 7.0g/cm cubed. in its solid state, iron has a density of 8.0g/cm cubed.

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.