A sound wave has a frequency of 524 Hz and travels the length of a football field, 91.4 m in 0.267 s. What is the period of the wave?

An object that is 0.5 m above the ground has the same amount of potential energy as a spring that is stretched 0.5 m. Each distance is then doubled.

1. A U. S. manufacturer wants to sell computer equipment to companies in Honduras. Because the U. S. government limits trade with Honduras, the manufacturer is required to obtain an export license from the Department of Commerce before selling and

Which is an example of convection? In a mountain forest, the sun heats up the ground. On a hot day, Amaya pours water on her face to cool off. At the beach, Stephan's feet get hot walking across the sand.

A reconnaissance plane flies 545 km away from its base at 568 m/s. then flies back to its base at 852 m/s. What is its average speed? Answer in its of m/s

What erases the impact craters on earth and is responsible for most of the landforms that we see?

8. A gas is contained in a horizontal piston-cylinder apparatus at a pressure of 350 kPa and a volume of 0.02 m3. Determine the work done by the piston on the gas if the cylinder volume is increased to 0.15 m3 through heating.

A 75.0 kg person stands on a scale in an elevator. (a) What does the scale read (in N and in kg) when the elevator is at rest?

The hinge at A and cable BDC support beam ABC. Cable BDC passes over the pulley D that is pinned to the ceiling. (Assume that the + x-axis is to the right and the + y-axis is up along the page.

The "zone of avoidance" a) Accounts for the absence of any planet between the orbits of Mars and Jupiter Prevents collisions between planets in the Solar System.

Electric current is ...