The free-body diagram below represents the forces of several vehicles driving across a bridge. Assume that the bridge is in static equilibrium and that it has
zero weight, and solve for the unknown reaction force.

What are the theoretical properties of a gas at a temperature of 0 kelvin?

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?

What are the examples for scaler quantities