Question

In twenty years of time a lot of changes come in any village/town. Collect
information in the table given below about these changes from your parents
old people and write in the format given below. Then prepare a comparative fa
statement showing the changes and present it in your class.
Present
SI.No.
Item
20 years before
1.
2.
3.
Houses
Transport
Mode of Communication
Food Habits
Entertainment
Nature of employment​

Answer 1

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Pressure is defined as the force exerted (on a surface) per unit surface area. Pressure is a scalar.

P = F / A, Its unit is Pascal = Newton / meter². There are also some other units in use for pressure.

1) F = P * A = 50, 000 Pascals * 0.5 meter = 25, 000 Pascals or N/m²

2) Surface Area A = Force / Pressure = 100 N / 500 pa = 1/5 m²

3) Area = 30 cm² = 30 / (100*100) meter²

Pressure = F / A = 300 N / (3/1000) = 100 * 1000 pa = 1 * 10⁵ pa

4 ) Area = 1 cm² = (1/100)² meter²

Force needed = P A = 20, 000 pa * (1/100²) m² = 2 Newtons

Answer 2

I am confused because my teacher told write in city's