Question

ROUND ALL NUMERICAL ANSWERS TO 3 SIGNIFICANT FIGURES UNLESS OTHERWISE 15. Waiter is moving with a speed of 12.0 m's through a normal ylindrical pipe with cross-sectional radius of 1 W π cm. The water gradally falls 10 m and at that point the pipe has become square, i.e. having a square cross section, with side of 7.5 mm (a) What is the speed at the lower level? (pay very careful atention to the unitst) (b) If the pressure at the upper level is 1 5x10'Pa, what is the pressure at the lower level? (c) A small, 3cm length of the square pipe at the bottom has one side made of glass weighing 0.01 N that has been glued into place, so that one can view whether water is passing. If the temperature of the water gets hot enough to melt the glue all at once in an instamt, sach that it no longer provides any force whatsoever, what will be the acceleration of the glass window the moment just after the glue melts? Hint: the air around the pipe is at atmospheric pressure 0.75 cm

Answer 1

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