Does the boat hold more weight in the regular water or the salt mixture

At an oceanside nuclear power plant, seawater is used as part of the cooling system. this raises the temperature of the water that is discharged back into the ocean. the amount that the water temperature is raised has a uniform distribution over the interval from 10° to 25° c. what is the standard deviation of the temperature increase?

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost