1.) How many significant figures are in the following number 0.001040 nm A.) 3
B.) 2
C.) 5
D.) 6

(If you can pls explain how you got the answer, ty!)

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

Stage in which a typical star has completely stopped fusion

7. in the cycle, a virus integrates its dna into the host's dna, and its dna is replicated when the host dna is replicated. a. infectious b. retroviral c. lysogenic d.lytic