Which equation represents the law of conservation of energy in a closed system? KEi + PEi = KEf + PEf PEi + PEf = KEi + KEf KEi – KEf = PEi – PEf KEi – PEf = PEi – KEf

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

→

2b2t

explanation:

2b2t

i wish i could but this one is weird give me abc and i can solve it.

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them