If 1.00 km^3 of air has a mass of 1.2x10^9 kg what is the density of air in g/cm^3

A 0.5-kg ball accelerated at 50 m/s2 . What force was applied?

You need to include: An explanation of gravity An explanation of how mass determines (or affects) the force of gravity An explanation of the part air resistance plays An example of the force of gravity (be creative)

Two wires are made out of the same metal, but one wire is twice as long as the other wire. which wire will have the greatest elastic modulus? the shorter wire

A person wants to fire a water balloon cannon such that it hits a target 100m100m away. if the cannon can only be launched at 45â45â above the horizontal, what should be the initial speed at which it is launched?

Let's see how much you know about space, so here's a good astronomer question for you (there's 2 questions included in this): 1.) What year does NASA plan on sending people to Mars? (A) 2020 (B) 2021 (C) 2022 (D) 2023 2.

Shows a 190 g hamster sitting on an 820 g wedge-shaped block. the block, in turn, rests on a spring scale. an extra-fine lubricating oil having μs=μk=0 is sprayed on the top surface of the block, causing the hamster to slide down.

What will happen to the hydronium ion concentration and pH of the water if hydrochloric acid is added to water?

What is the main driver of the water cycle

What two types of evidence are used to classify orgianisms?

What is the name of the fine soil particles deposited by rivers?