Questions: A bicycle pump is sealed at one end and the piston pushed until the pressure of the trapped air increases to 4.00 x 10^3 Pa. The area of the piston compressing the air is 5.00 x 10^-4 m^2. The force that the trapped air exerts on the piston is A 1.25 x 10^-9 N B 8.00 x 10^-1 N C 2.00 x 10^2 N D 8.00 x 10^8 N E 2.00 x 10^10 N.

Transcript text: 13. A bicycle pump is sealed at one end and the piston pushed until the pressure of the trapped air increases to $4.00 \times 10^{3} \mathrm{~Pa}$. The area of the piston compressing the air is $5.00 \times 10^{-4} \mathrm{~m}^{2}$. The force that the trapped air exerts on the piston is A $\quad 1.25 \times 10^{-9} \mathrm{~N}$ B $\quad 8.00 \times 10^{-1} \mathrm{~N}$ C $\quad 2.00 \times 10^{2} \mathrm{~N}$ D $\quad 8.00 \times 10^{8} \mathrm{~N}$ E $\quad 2.00 \times 10^{10} \mathrm{~N}$.