Fresh water moves at a constant speed through a pipe. The pipe bends upward, but the diameter does not change. What is the difference in pressure, Pg - PA, if the pipe rises 8.00 m and then levels out again? See the diagram below. Point B Point A 8.00m O A) -8.00 x 10³ Pa O B) -7.85 x 104 Pa O9 +8.00 x 10³ Pa OD) +7.85 x 10ʻ Pa

A person who weighs 671 N is riding a 85-N mountain bike. Suppose the entire weight of the rider plus bike is supported equally by the two tires. If the gauge pressure in each tire is 5.20 x 105 Pa, what is the area of contact between each tire and the ground?   Number Type your answer here Units Choose your answer here

Water travels through a pipe at 9.11 m/s. The pipe contracts from a crossectional area of 1.9 m2 to an area of 0.211 m2.   a) What is the speed of the water in the second part of the pipe in m/s?  m/s   b) How much is the pressure change in KPa as the pipe contracts? The density of water is 1000 kg/m3. Enter a positive value for an increase in pressure, a negative value for a decrease.  kPa

Water at a pressure of 3.85 x 105 N/m2 at street level flows into an office building at a speed of 0.68 m/s through a pipe with a radius of 2.5 cm. The pipe tapers down to 1.4 cm in diameter by the top floor, 18 m above the street. The flow speed is 2.2 m/s at the top floor. Calculate the pressure in the pipe on the top floor.

Vb = D A D Vmax = m³ c) What is the depth D below the waterline? W max = b) What is the volume of water displaced when the barge is empty? This will be in terms of D. m h Water. line m³ 1) A flat bottomed barge in the water has a base with area A 4000 m². The height, h, of the barge is 2 m. and the distance D is the depth of the barge below the i water line. The mass of the barge when empty is m, = 1,000,000 kg. N a) What is the weight of the empty barge? 9,800,000 mg = 1,000,000 (9.8) W₁ = The theoretical maximum mass of the barge, including its load, will be when the top of the barge is at the water level. d) What is the maximum volume of water displaced, and the mass of this much water? e) What is the theoretical maximum weight of the barge? N Illmax = - 16 hour!! (3) kg 525555, 004 Hae ad 11.

Liquid pressure The pressure P acting at a point in a liquid is directly proportional to the distance d from the surface of the liquid to the point. (a) Express P as a function of d by means of a formula that involves a constant of proportionality k. (b) In a certain oil tank, the pressure at a depth of 2 feet is 118 Ib/ft. Find the value of k in part (a).