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I'm having trouble answering this question. I've tried the answers 75.36, 74, 22.6 and 23 and...

I'm having trouble answering this question. I've tried the answers 75.36, 74, 22.6 and 23 and they were all wrong:

A hand-driven tire pump has a piston with a 2.00 cm diameter and a maximum stroke of 30.0 cm.

(a) How much work (in J) do you do in one stroke if the average gauge pressure is 2.40 x 10^5 N/m2 (about 35 psi)?

(b) What average force (in N) do you exert on the piston, neglecting friction and gravity?

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Answer #1

d = 2 cm = 2x102m 1x 162m rs ola - 2 = 30 cm = 0.30 m h max (a) Pa Pat Pg = 2.40 X10 N/m? Pa=1.01 xlos N/m² P = Pat = 3.41 X116) :F=-PA F =-(341x109) ((14153] F--107.13 N

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