The microwave has 60% efficiency, this means that the power delivered (P=900 W) is 60% of the original power of the source, while the other 40% is dissipated.
We can write it this way:
where
is the power of the source, which we can find by re-arranging the equation:
A martian meteorite is a rock that was flung from mars to earth by the force of an asteroid hitting mars (there for sending our little rock friend flying). Over 61 thousand of these meteorites have been found on earth 132 were identified as martian.<span />
Answer: Option (a) is the correct answer.
Explanation:
When rain passes through the air then carbon dioxide present in the air dissolves in the water. Further, this carbon dioxide reacts with water and results in the formation of carbonic acid.
Thus, the rain water becomes acidic in nature and as a result, there will be decrease in its pH.
Hence, we can conclude that rain has a natural pH that is acidic.
Answer:
See below
Explanation:
There are 3600 seconds / hr
7.2 s / 3600 s/hr = .002 hr
Car traveled 1/10 mile in .002 hr
1/10 mi / .002 hr = 50 mi/hr
