A cat thinks that you are opening a can of cat food when it hears the can opener.
A dog shying away from a magazine or newspaper, if the owner has used one to swat the dog as punishment.
If humans are ok to use as examples, A child learning that a stove is hot by touching it.
Answer:
Hello There!!
Explanation:
I think its 53 protons but depends which element you are referring to.The sum of the numbers of protons and neutrons equals the mass number.
hope this helps,have a great day!!
~Pinky~
Answer:
B) Heat energy
Explanation:
Sunlight is heating the air and also heating the copper tubes in order to function the solar energy system. It's using the heat of the sun to power the panels.