Looks like you need to review through the lesson and take notes as it tells you in the lesson what each of these are.
Answer: exotic medium can be engineered to slow light
Explanation:
The relationship between gravity and pressure in a nebula is that pressure balances gravity. <span>The </span>pressure<span> exerted by a static fluid depends only upon the depth of the fluid, the density of the fluid, and the acceleration of </span><span>gravity. The answer is B. </span>
The dirt pushing back is the 'resistance' force. It RESISTS your attempts to shovel it.
Answer: below
Explanation: Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume
