Answer:
Approximately (assuming that the car is moving on level ground, and that there is no friction to hinder the motion of the car.)
Explanation:
Formula for the kinetic energy, , of an object of travelling at velocity :
.
Let and denote the velocity of this car before and after the acceleration.
Kinetic energy of this car before the acceleration:
.
Kinetic energy of this car after the acceleration:
.
Assume that this car was travelling on level ground. Also assume that there is no friction to hinder the motion of this car. The work of the engine of this car would be equal to the amount of that the car has gained:
.
Answer:
2.8 MW
Explanation:
There are 7 wind turbines in the wind farm as shown in the diagram. Thus, the energy output by one turbine is 1/7 if the total energy output. So, 19.6/7=2.8MW
Answer:
As sound waves move (or more accurately, when they travel by transferring their energy) they interact with physical objects. Soft surfaces will absorb sound while hard surfaces will reflect it. .Hard surfaces reflect sound and soft surfaces absorb sound.
The convex mirror has a reflecting surface that curves outward, resembling a portion of the exterior of a sphere. Light rays parallel to the optical axis are reflected from the surface in a direction that diverges from the focal point, which is behind the mirror
Answer:
Reverse Flash
Explanation:
the Reverse Flash is obviously faster than the Flash. He is more experienced and much stronger . And unlike Berry he is not affected by time travel
Out of the given salts, decreases in solubility as the temperature increases.
Answer: Option B
<u>Explanation:</u>
Here we are talking about Cerium (III) Sulphate which is an inorganic compound, commonly known as Cerous Sulphate. Its chemical formula is . This salt has a monoclinic crystal structure and appears off-white in colour.
It’s solubility in water is 9.25 g/100ml at the temperature of 20, that decreases with the increase in temperature and that’s why it’s counted amongst those few salts that has less solubility when increase temperature.