a microscope is set so it makes an object appear 4 x 10`2 times larger than its actual size. A virus as a diameter of 2 x10`-7 meter. ow Large will the diameter of te virus appear when it is viewed under te microscope?

Answer 1

view=diagmeter*Magnification
= 2E-7*4E2=8E-5

Answer 2

A box contains 5x10³ thumb tucks. The mass of each thumb in the box is 8x10⁴ kilograms. What is the combined mass of the thumb tucks in the box? Express your final answer in correct scientific notation