Question

When the gas was increased by heating a cylinder with a cross section of 100 cm², the amount of heat transferred to the gas was 0.75 * 10 J. The gas pressure is constant and 1.5 * 10? So ten. If the piston moves 40 cm a) force on the piston
b) work performed by gas​

Answer 1

Let x=0.47ˉ  (Mixed recurring decimal)

i.e. x=0.47777…(1)

Multiplying (1) by 10, to make it pure recurring decimal, we get

10x=4.7777…(2)

Further multiplying (2) by 10, we get

100x=47.777….(3)

Subtracting (2) from (3), we get

100x–10x=(47.777…)–(4.7777…)

⇒90x=43

⇒x=9043

Thus 0.47ˉ=9043