Compare your everyday experiences to the simulation. Design a few tests like rolling things off a table or tossing some things into a basket or bowl to determine how well the simulation represents projectile motion. Some good objects are tightly rolled socks or paper crumpled into a ball. Write about your experiments and compare them to the simulation.

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b

you need to have a picture of the atom that way we can answer it