Sound waves in air are a series of

a. periodic disturbances.

b. periodic condensations and rarefactions.

c. high - and low-pressure regions.

d. all of the above E. none of the above

Explain how electromagnetic waves are produced. I

In the stream, water waves bunched up as the water flowed by. As we moved the disturbance up stream, the water bunched up even more. An airplane can travel at the same speed as sound does, about 340 m/s.

A new landowner has a triangular piece of flat land she wishes to fence. Starting at the west corner, she measures the first side to be 80.0m long and the next to be 105m. These sides are represented as displacement vectors A and B in the above.

During a thunderstorm, you should crouch under a tree for shelter. a. True b. False

Which electromagnetic wave transfers the least amount of energy? A. gamma B. X-ray C. ultraviolet D. microwave

What is the maximum angle a light ray can make with the wall of the core if it is to remain inside the fiber?

Heat transfer within a fluid takes place by a. convection currents. b. radiation. c. conduction. d. density. I think it's A

Compare and contrast how wind and glaciers abrade rock

An object of mass 10 kg is accelerated upward at 2 m/s squared. what force is required?

How much work does a supermarket checkout attendant do on a can of soup he pushes 0.600 m horizontally with a force of 5.00 N? Express your answer in joules and kilocalories.