In this channel of communication, messages are carried by sound and light waves.

a. teleconference

b. face-to-face

c. voicemail

d. hard copy memos

Wave in which amplitude changes to create sound

1. What is the frequency of a wave that has a wave speed of 20 m/s and a wavelength of 0.50 m?

Unlike the idealized voltmeter, a real voltmeter has a resistance that is not infinitely large. part a a voltmeter with resistance rv is connected across the terminals of a battery of emf e and internal resistance r.

A filled water tower sits on the top of the highest hill near a city. The cylindrical tower has a height of 55.0 m Find the pressure (in kPa) on the bottom of the water tower

What's the transmission of heat requiring the movement of a liquid or a gas is?

What causes an air conditioned to turn on

A turntable is spinning on a frictionless axle when a ball of putty is dropped onto it from above. The putty sticks to the turntable when it lands. Is angular momentum conserved for the turntable and putty (the system) during this process?

The speedof a boat in still water is v. The boat is to make a round-trip ina river whose current travels at speed u.

Why are there so few working wave power stations?

Two abiotic factor that effect an ecosystem are;