MRI machines use extremely strong magnetic fields. These fields must be adjustable to produce high-quality images. What might these machines use to generate such a field?
A
electromagnets
B
permanent magnets
C
induced current

Select the atomic models that belong to the same element

Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?