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Paul [167]
3 years ago
14

The energy source used to produce most of the electrical energy in the United States is _______? Can someone help me on this?,

Physics
1 answer:
coldgirl [10]3 years ago
8 0
<span>The energy source used to produce most of the electrical energy in the United States is Fossil fuels. Fossil fuels are generated over a long period of time by decomposition of dead flora and Fauna. Fossil fuels consists of three things- Coal, Petroleum and Natural Gas. Natural gas approx contributes 34%, Coal approx contributes 30% and Petroleum approx contributes 1% of total energy produced in US.</span>
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A spring with a constant of 92N/m is compressed 2.8 cm. How much potential energy is stored in the spring?
Arada [10]

Answer:

0.036J

Explanation:

Given parameters:

Spring constant , K  = 92N/m

Compression  = 2.8cm  = 0.028m

Unknown:

Potential energy  = ?

Solution:

To solve this problem;

          P.E  =\frac{1}{2} K e²

 K is the spring constant

 e is the compression

so;

      P.E = \frac{1}{2}  x 92 x 0.028²  = 0.036J

6 0
3 years ago
which of the following instruments measures air pressure? group of answer choices barometer hygrometer radiometer thermometer
Zepler [3.9K]

The tool used to gauge atmospheric pressure is a barometer. Concerning the device used to gauge air pressure, we have been questioned.

  • Mercury is used in barometers. A reservoir of mercury is compressed by atmospheric pressure, and depending on the force of the air, the mercury is propelled up into the tube to a specific height. A straightforward barometer consists of a long glass tube that is filled with mercury and is closed at one end and open at the other. As most cases, the air pressure is expressed in mm Hg.
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To know more about barometer

brainly.com/question/767070

#SPJ4

4 0
1 year ago
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Answer:

Boundaries between the plates are of three types: divergent (i.e., moving ... Plates are thought to move along the lithosphere-asthenosphere boundary, ... plates include both crustal material and lithospheric mantle material makes it ... crust to the ocean floor where it creates a chain of volcanic islands known as an island arc.

Explanation:

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3 years ago
What color is mercury
Evgen [1.6K]
Hello!
If you are referring to the mercury substance, mercury is a bright red color, usually used in early thermometers and is deadly if humans have a lot of constant with this substance
7 0
3 years ago
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An electromagnetic wave is traveling straight down toward the center of the Earth. At a certain moment in time the electric fiel
Anika [276]

Answer:

North

Explanation:

In an electromagnetic wave, the direction of the wave, the direction of the electric field and the direction of the magnetic field are all perpendicular to each other.

Therefore, we can  find the direction of the magnetic field by using the right hand rule. We have:

- Index finger: direction of motion of the wave --> toward the center of Earth

- middle finger: direction of the electric field --> west

- thumb: direction of the magnetic field --> north

So, the magnetic field points north.

3 0
3 years ago
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