The most abundant gas in the Earth's atmosphere is:

a. oxygen

b. carbon dioxide

c. hydrogen

d. nitrogen

In January 2006, astronomers reported the discovery of a planet comparable in size to the earth orbiting another star and having a mass of about 5.5 times the earth's mass. It is believed to consist of a mixture of rock and ice, similar to Neptune.

Allison wants to calculate the speed of a sound wave. Which formula should she use? distance traveled / amplitude number of wavelengths / amplitude number of wavelengths / time distance traveled / time

Which letter represents the wavelength of the wave? a. a.

What is terminal speed? When a skydiver has reached terminal speed, what is the are resistance equal to? What is the skydiver's acceleration? Be sure to use at least 3 to 4 complete content related sentences.

Where are the metals located on the periodic table

If the mass of a material is 42 grams and the volume of the material is 15 cm^3, what would the density of the material be? answer: Unit:

35. An object of mass m moving at speed v0 strikes an object of mass 2m which had been at rest. The first object bounces backward along its initial path at speed v0.

Calculate the change in the canister pressure when the outside temperature changes from 72 ∘f to 80 ∘ f.

Give two examples of motion related to civil engineering.

The waves shown below represent sound waves. Which of the waves would have the highest-pitched sound?