It's the average mass of the isotopes of atoms of an element

What is the conversion factor between kg/m^3 and g/m^3. express your experimental values for the densities in kg/m^3.

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?