An atom in normal conditions refers when electrons are in the fundamental state. When you leave the atom, an electron absorbs energy from an external source and moves to a higher energy state.
Energy states or energy levels are called orbitals. The difference between the energy states in an atom is responsible for the emission of photons when an electron transition occurs between these two energy states.
Because the energy levels are discrete, the emitted photons also possess different energies.
I believe so, yes.
(i am just writing this so that it will allow me to post the answer
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Answer:
(a) The rate of heat transfer is <em>238.26 kW.</em>
(b) Rate of entropy generation is <em>0.063 kW/K.</em>
Explanation:
(a) Taking the heat gained by the cold water into consideration,
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<em>Q = (0.95 kg/s)(4.18 kJ/kg.⁰C)(70-10) = 238.26 kW.</em>
(b) Entropy generation = entropy in cold water + entropy in hot water
But
∴ = (0.95)(4.18)(ln(343/283)) + (1.6)(4.19)(ln(1- (238.26/((1.6)(4.19)(358))))
= 0.7636 + (- 0.7009) = 0.0627 kW/K.
It is fairly easy to build an electromagnet. All you need to do is wrap some insulated copper wire around an iron core. If you attach a battery to the wire, an electric current will begin to flow and the iron core will become magnetized. When the battery is disconnected, the iron core will lose its magnetism. Follow these steps.
Step 1 - Gather the Materials
One iron nail fifteen centimeters (6 in) long
Three meters (10 ft) of 22 gauge insulated, stranded copper wire
One or more D-cell batteries
Step 2 - Remove some Insulation
Step 3 - Wrap the Wire Around the Nail
Step 4 - Connect the Battery
A graphical model of energy flow is an energy pyramid; The steps of the energy flow are
Producers: Green plants store solar energy as chemical energy after it being converted by photosynthesis.
Consumers: The are unable to produce food, they live on food produced by green plants.
Decomposers: some bacteria and molds break down the dead bodies of plants and animals step by step and turn them into simpler substances of dead plants and animals.