Astronomers are comparing two stars that are known to have the
same luminosity. Star A is observed to be 4 times brighter than star B.
How far away is Star A compared to Star B?
2 times closer
4 times closer
2 times farther
16 times closer

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Four 5-gram blocks of metal are sitting out in the sun and absorb the same amount of heat energy. use the following specific heat capacity data to determine which block will increase its temperature the most.

Farmer a has a deep well and needs a lot of water for her animals and crops. her neighbor, farmer b, has a shallower well. he needs less water than farmer a because his farm is smaller. in years of drought, sometimes farmer b can't get any water from his wells. what can farmer b do to decrease the likelihood of his well running dry?