How does a nuclear power plant produce electricity? a. quickly moving neutrons coming out of the reaction create a gas which turns a turbine that produces electricity. b. quickly moving neutrons coming out of the reaction are slowed down by water. the water heats up and turns into steam. the steam turns the turbine and produces electricity. c. quickly moving neutrons coming out of nuclear reactions are used to turn turbines that produce electricity. d. quickly moving neutrons give their kinetic energy to the surrounding water. the water's energy is then used to turn turbines and produce electricity.

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.

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