How much heat would be needed to completely evaporate 43.5 g of boiling water at a temperature of 100 °c? express your answer in units of joules.

The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

Convection occurs when thermal energy is transferred by the movement of