Air conditioning, or cooling, is more complicated than heating. Instead of using energy to create heat, air conditioners use energy to take heat away. The most common air conditioning system uses a compressor cycle (similar to the one used by your refrigerator) to transfer heat from your house to the outdoors.
Picture your house as a refrigerator. There is a compressor on the outside filled with a special fluid called a refrigerant. This fluid can change back and forth between liquid and gas. As it changes, it absorbs or releases heat, so it is used to “carry” heat from one place to another, such as from the inside of the refrigerator to the outside. Simple, right?
Well, no. And the process gets quite a bit more complicated with all the controls and valves involved. But its effect is remarkable. An air conditioner takes heat from a cooler place and dumps it in a warmer place, seemingly working against the laws of physics. What drives the process, of course, is electricity — quite a lot of it, in fact. Hope this helps?
To help radio operators on ships stay awake was the impetus for corporations to begin entertainment broadcasting on radio.
e. to help radio operators on ships stay awake
<u>Explanation:</u>
The principal radio station ever on the planet's history was made by Reginald Fessenden on Christmas Eve in 1906 when he radiated a "Christmas show" to the bewildered teams of the boats of the United Fruit Company out in the Atlantic Ocean and the Caribbean Sea.
The main voice and music signals heard over radio waves were transmitted in December 1906 from Brant Rock, Massachusetts (only south of Boston), when Canadian experimenter Reginald Fessenden delivered about an hour of talk and music for specialized onlookers and any radio beginners who may be tuning in.
Radio turned into another type of correspondence and amusement. Between the 1920s and 1950s many radio shows were communicated, and assembling around the radio at night was a typical type of diversion.
Answer:
The sonar operator looks at the display a forms an internal representation of the strength of the evidence that a submarine is present. If this exceeds an internal, subjective threshold,the sonar operator tells the captain that a submarine is present.
The answer has to be true because everything makes sense
It should be A. DOS because all of the others are operating systems.
