The correct answer is - D. 1 percent.
The United States are the biggest consumer of electricity in the world. Because of that the United States are using multiple different sources in order to satisfy the demand for the electricity. The solar energy though accounts for only 1% of the total amount of produced electricity in the country and that is concerning. The biggest concern of course is the environmental one as the majority of the electricity is produced by sources that are polluting the environment. The other concern is that the United States are not using their potential in gaining more electricity from the solar radiation when taken in account that they have very large areas in the country that have a lot of intense solar radiation and clear skies throughout most of the year.
Plans used for work that has to do with construction in or around Earth are called, “Civil Plans.”
Hope this helped!
.........Nucler fission.... .
Answer:
A) It will move at a different speed (i.e slower)
B) A vacuum
Explanation:
For A), Light moves at a different speed as it starts to interact more with the particles in said medium (in this case, water) than the earlier medium.
For B), Light propagates using its own particle, i.e the photon whereas sound is more of a transmission of energy from the particles it originates from. In a vacuum, there are no particles to transfer energy to, that is why light can travel in a vacuum and sound cannot
(a) 0.74 m/s^2
Explanation:
There are two forces acting on the skier: the component of the weight parallel to the slope, which acts downward, and the frictional force, which acts upward along the incline.
The component of the weight parallel to the inclined plane is:
where m is the mass of the skier, 
and 
.
The frictional force is instead
is the coefficient of friction for waxed wood on wet snow.
If we apply Newton's second law, we can write that the net force must be equal to the product of mass per acceleration:
And symplifying m, we can find the acceleration:
(b) 
Explanation:
This time, the skier is moving at constant velocity. Therefore, the acceleration is zero (a=0) and Newton's second law becomes:
By simplifying, we get
From which we can find the angle at which the skier could coast at a constant velocity:
