What is formed in the shape of a long, low land area between hills or mountains?

Which interaction of sound waves causes beats? (Apex) A. Interference B. Reflection C. Diffraction D. Refraction

How does the conservation of energy deal with the flash's supersonic punch? For a physics project

The space shuttle passes over mission control in Texas. After it flies a distance of 1,600,000 meters it is above Florida.

Technician A says that the back of all engine bearings should be lubricated during assembly. Technician B says that the face of the main and rod bearings should be lubricated before final assembly. Which technician is correct?

What is the minimum coating thickness (but not zero) that will minimize the reflection at the wavelength of 705 nm where solar cells are most efficient?

A car travels 15 miles in 30 minutes. Calculate its average speed.

What two factors affect the strength of a gravitational attraction? How does each effect the strength

A spring is stretched 2 cm when a mass of 40 grams is hung from it what is the spring constant of the spring

Can a red nova hurt earth?

Where does friction oppose motion in a roller coaster car