Answer:
mv=11700
m=900
v=11700/900=13m/s in west
Potential Energy = Mass * Gravitational Constant * Height
What We Don't Know: Potential Energy
What We Know:
Mass
Gravitational Constant (9.8 m/s)
Height
Ep = mgh
Ep = 4 * 9.8 * 2
Ep = 78.4 Joules
The Potential Energy of the Rock is 78.4 Joules, based on the given information! Hope this helps you!
Answer:
Explanation:
When a person shouts it emits 1 W of energy as sound waves, P = 1 W
Let I is the sound intensity 1 meters from such a person. We know that the power per unit area is called the sound intensity of the person. Its formula is given by :
So, the sound intensity of such a person is 
. Hence, this is the required solution.
Water cycle basically involves the change of water into liquid to vapour and again to liquid states through a cyclic manner .
The answers are
- Evaporation
- Transpiration
- Condensation
- precipitation
- runoff
- seapage
- ground water
