hi as u can see the previous chegg expert got all of these wrong. please can u m

Question

hi as u can see the previous chegg expert got all of these wrong. please can u make sure it's right and please solve all 6 parts with steps and neatness. thank you so much for your time

A 125-g bullet is fred from a nife having a barrel 0.660 m long, Choose the onigin to be at the location where the bulet begins to move. Then the force (in newtons) exerted by the expanding gas on the bullet is 17000 + 10000x 26000x2, where x is in meters. (a) Determine the work done by the gas on the bullet as the bullet travels the length of the barrel. (Enter your answer to at least two decimal places.) (b) If the barrel is 1.10 m long, how much work is done? (Enter your answer to at least two decimal places.) (e) How does this value compare with the work calculated in part (a)? percent error-1161 7 P031 WI A 0.500-kg particle has a speed of 2.30 m/s at point and kinetic energy of 7.70 J at point (a) what is its kinetic energy at @ (b) What is its speed at B (c) What is the net work done on the particle by external forces as it moves from to B m/s 7 P032 t speed for 12.8 m along a wood floor does 370 J of work by applying a constant horizontal force of magnitude F on the crate. My N by applying

Explanation / Answer

1st question:

W=Integral(Fds), so you have to integrate the above equation from 0 to 0.66 in the first case and from 0 to 1.1 in the second

(a)

W = (17000x + 10000X^2/2 -26000x^3/3) from 0 to .66 = 10,906.368J = 10.906 kJ

(b)

W = (17000x + 10000X^2/2 -26000x^3/3)from 0 to 1.1 = 13214.67J = 13.215 kJ

(c)

% = (13.215 – 10.906)/10.906 *100% = 21.17%

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