Sound travels slow in cold air. Why does the speed of sound depend on air temperature?

The world record for the hundred meter dash is 9.77 s. what is the corresponding average speed in units of m/s, km/h, ft/s, and mi/h?

A rock is placed in a graduated cylinder containing water, and the cylinder is covered to avoid evaporation. The next morning the water level has dropped by 5.65 ml. No one has to the cylinder, and the cylinder has no leaks.

Density is calculated by dividing

What is the best way to get the right amount of vitamins needed from proper growth and development?

A 2,511 kg railroad car moving at 4.192 m/s to the east collides with a 8,199 kg railroad car moving at 3.781 m/s to the west. If the cars couple together, what is their velocity after the collision?

What do you suppose would cause an atom to lose an electron?

Calculate the average speed of spacecraft orbiting mars

Two small spheres spaced 20.0 cm apart have equal charge. how many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57 * 10-21 n?

Which characteristic would you expect from a sample with a pH of 9

A paragraph that can serve the specific purpose of creating a special effect within the essay is called? a. paragraph block b. functional paragraph c. unified passage d. topical paragraph