Frequency of a wave is 20 Hz. It travels with a speed of 5 m/sec. What is wavelength?

Why cooking gas has a typical smell

When using two-wire cable to feed a 240-v appliance that does not require a neutral wire, you should a. mark both ends of the white wire green. b. use the cable as is. c. use only the black wire. d. mark both ends and any exposed area of the white wire black.

What are igneous intrusions and extrusions