Answer:
Explanation:
Fill up the tank of water which is at a height.
So Work Done = Change n Potential Energy = mgh
Here h is the Height of the Center of mass of the water
Divide it by Time to get power
Answer:
Solids
Explanation:
The speed of sound is different in different mediums. Among solids, liquids, and gases, sound travels faster through solids. The particles in solids are more closes as compared to liquids and gases.
It has to be one continuous column of cloud (air) connected to the ground and in constant rotation.
The very cold (about 20 K), dense clouds of gas thought to be the most massive objects in the Galaxy are called molecular clouds.
Answer: Option B
<u>Explanation:</u>
Molecular clouds are basically the interstellar clouds made of dust and gaseous clumps. The clouds have an average density of 100 to 300 mcc with a temperature range of 10 to 20 K. The formation of stars takes place in the inner region of clouds. The size of molecular clouds may range from a few Light years to 600 Light years. A dar Nebula is the densest version of the molecular clouds.