Which of the following choices results in a decrease in the overall density of a product? question 5 options: increase the volume of the product (and keep the same materiel) decrease the volume of the product (and keep the same materiel) increase the weight of the product (and keep the same materiel) decrease the weight of the product (and keep the same materiel)

- Increase the volume of the product (and keep the same materiel).

- Increase the weight of the product (and keep the same materiel).

Explanation:

Hello,

Based on the equation defining the density:

Whereas is the mass and the volume, in order to decrease the density it is necessary to:

- Increase the volume of the product (and keep the same materiel).

- Increase the weight of the product (and keep the same materiel).

Due to the fact that the volume is inversely proportional to the density and the weight is directly proportional to the density.

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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.