Which statements describe or apply the principal of conservation of energy? Select all that apply. * A. Energy cannot be created or destroyed; it can only be transferred from one location to

another.

B. Home insulation can reduce energy bills by conserving energy that would otherwise be lost.

* C. If the temperature in one location decreases, then the temperature in another location

increases.

D. The total energy in a closed system such as Earth stays the same.

E. Nonrenewable energy resources can be conserved, but they will eventually run out.

The total energy in a closed system such as Earth stays the same.

Explanation:

The simplest statement of the law of conservation of energy is that energy can neither be created nor destroyed but can be converted from one form to another.

A typical illustration of this principle of conservation of energy is a closed system of which our universe is an important example.

The total amount of energy in the universe is always a constant. Energy lost in one part must be equal to the energy gained on the other part.

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure  

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.