Which sentence uses punctuation correctly?
a. as soon as he gets home from work dad takes off his shoes.
b. as if he were a wild beast little michael growled at the strange baby-sitter.
c. whenever you are ready, we will go to the pool.

Place me with this question is my last question

Which is a substance that can be separated by physical means and is not the same throughout

Acyclotron is used to produce a beam of high-energy deuterons that then collide with a target to produce radioactive isotopes for a medical procedure. deuterons are nuclei of deuterium, an isotope of hydrogen, consisting of one neutron and one proton, with total mass 3.34×10−27kg. the deuterons exit the cyclotron with a kinetic energy of 6.40 mev .a-what is the speed of the deuterons when they exit? b-if the magnetic field inside the cyclotron is 1.25 t, what is the diameter of the deuterons' largest orbit, just before they exit? c-if the beam current is 350 μa how many deuterons strike the target each second?