Cience 6-49W
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English
56:08
A scientist discovers a new object in the Kuiper Belt and claims it is a dwarf planet. What would have to be true about the
object for the scientist to be correct?
The object would have to be irregularly shaped, have an atmosphere, and be traveling in a path with other objects..
The object would have to be irregularly shaped, orbit the Sun, and be traveling in a path free from other objects
The object would have to be spherical, orbit the Sun, and be traveling in a path with other objects.
The object would have to be spherical, have an atmosphere, and be traveling in a path free from other objects.
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the law of conservation of mass states that in a chemical reaction, the total mass of reactants is equal to the total mass of products. because atoms are only rearranged in a chemical reaction, there must be the same number of sodium atoms and chlorine atoms in both the reactants and products

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.

what does the table look like