where C is the line segment joining the points 
and 
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Q47: Compute the work performed in moving a
Q48: Evaluate <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5596/.jpg" alt="Evaluate for
Q49: Calculate the work performed by the force
Q50: Find the surface area of the portion
Q52: The area of the surface <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5596/.jpg"
Q53: Let <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5596/.jpg" alt="Let where
Q54: The integral <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5596/.jpg" alt="The integral
Q55: Let <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5596/.jpg" alt="Let
Q56: Let <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5596/.jpg" alt="Let .