C. Useful energy out of a system is always less than the energy input of that system.
Explanation:
The correct statement of the given options is that useful energy out of a system is always less than the energy input of that system.
This is in compliance with the third law of thermodynamics which states that "energy transformation in a system is not 100% efficient".
- At every stage energy is usually lost when it is transformed from one form to another.
- There is no machine that is 100% efficient.
- A machine that is 100% efficient will convert all the useful energy in it to do work and even more.
- In system energy is usually lost as a result of heat and to overcome friction.
- This reduces the amount of energy out of a system.
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Answer:B is the right answer I am sure.
Explanation:
Assuming that the disease decreases the affected component:
Osteocytes: These help in bone production so if they decrease, bone density will decrease.
Osteoclasts: These break bone down so if they decrease, bone density increases
Osteoblasts: Help in bone production, their decrease will reduce bone density.
Collagen fibers: Help in bone production, their decrease will reduce bone density.
<span>The two most common ways are the use of a water restrictor in the shower head, most of the heads in the U.S.A are equipped with a water restrictor. Secondly, the commode water tanks have been made smaller using less water per flush. Some conservation of water may be gained by using "instant" water heaters in the shower/bath and basin rather than a hot water tank type heater. Locating an instant water heater near the output of the water reduces the need to let the water run until it becomes hot at the output. </span>I hope that this is the answer that you were looking for and it has helped you.
