What amount of work will be accomplished in elevating 40,000 gallons of water to the top of an elevated tank that is 80 feet high?(in US units (ft-Ib))

When does your body conduct current more readily?

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 happens when the vapor pressure of a liquid is equal to the external pressure?