Chemistry, 03.02.2020 18:55 cameronchilders

Brainliesttt !me : )

how is density calculated and used to distinguish materials?

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Answer from: avery8626

To find the density of a material, you need to know the mass and volume of a solid sample of any material.

Mass can be measured with balance or a scale. So, you use the displacement method or calculate the volume, and it helps with that.

As we may already know, density is the mass of any object and divided by its volume. If you need to identify an unknown object, you can determine the mass of it on a scale.

Density = mass/volume

Answer from: jakebice4480

Density is the mass of an object devised by its volume. Density often has a units of grams per cubic centimeter. The units used to measure volume are centimeters and milliliters. The instruments used to measure volume are a ruler and a graduated cylinder. The definition of density is the amount of mass in one cubic centimeters.

Answer from: Quest

c. because step up transformer steps up the input voltage i.e increases the input voltage

the number of turns are greater on the secondary side of step up transformer

transformer does not handle dc current

Answer from: Quest

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.

Write 15 uses of a mercury barometer along with its characterestics

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