A boat traveling at 6.7 m/s produces a wavelength of 2.5 m. What is the frequency of the wave?

1. 4.2 Hz
2. 16.75 Hz
3. 2.68 Hz
4. 0.37 Hz

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.

Aspring has a natural length of 8 m. if a 12-n force is required to keep it stretched to a length of 10 m, how much work w is required to stretch it from 8 m to 16 m? (round your answer to two decimal places.)

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation