Cold water flows to the solar panels at 15°C. During the day, the panels supply 3.8 kg of hot water at 65°C every hour.
(a) Calculate the average energy that the solar panels deliver to the water in one hour.
Specific heat capacity of water = 4200 J/(kg°C). ​

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?

How do you know how many valence electrons an atom has?