Awire is wrapped around a piece of iron, and then electricity is run through the wire. what happens to the iron? a. it becomes demagnetized. b. it becomes permanently magnetized. c. it becomes magnetized as long as the current flows. d. the polarity of the nail is reversed.

How do the energy differences between the higher energy levels of an atom compare with the energy difference between the lower energy level of the atom

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

Fugu, also known as puffer fish, is a sushi delicacy that can also be lethal. puffer fish contain a powerful toxin that can kill an adult a few hours after ingestion. sushi chefs who prepare fugu must be specially trained because any contamination of the toxin-free areas of the fish can be deadly. recently this toxin has been put to good use, as scientists have discovered that a purified form of it can treat severe pain in cancer patients. this recent scientific discovery would fall under which area of chemistry? applied biochemistry pure organic chemistry pure physical chemistry applied inorganic chemistry