5. A garden hose is held above ground so that the stream of water from it starts horizontally (see the figure below). The cross sectional area of the hose end is 2 cm and the stream of water hits the ground 3 m away. 3 m (a) If the end of the hose is 1.4 m above the ground determine the velocity at which the water stream leaves the end of the pipe. 5.61 m/s) (b) The cross sectional area of the end of the hose is now reduced to 1 cm by placing a thumb over it. Assuming that the rate of flow is not affected, determine how far the stream of water will hit the ground. F6.0 m)

A piece of wood floats in water with 50 mm projecting above the water surface. When placed in glycerin of specific gravity 1.35, the block projects 75 mm above the liquid surface. a. Find the height of the piece of wood. b. Find the specific gravity of the wood. c. Find the weight of the wood if it has a cross sectional area of 200 mm x 200 mm.

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You are planning on installing a new above-ground swimming pool in your backyard. The pool will be rectangular with dimensions 31.0 m x 10.0 m. It will be filled with fresh water to a depth of 1.90 m. In order to provide the appropriate structural support, you wish to determine the following. (a) Determine the force exerted on the bottom of the pool by the water (in N). N (b) Determine the force exerted on each end of the pool by the water (in N). (Assume the end is the 10.0 m wall.) N (c) Determine the force exerted on each side of the pool by the water (in N). (Assume the side is the 31.0 m wall.) N (d) You wish to have swimming parties with your children and grandchildren. At a given time, you might have 29 people with an average mass of 75.0 kg in the pool. You need to determine if such parties will affect your calculations for the required strength of materials supporting your pool. O The parties will not affect the required strength since the forces on the surfaces will increase…

1st question only please?

A Water Tank That Needs Cleaning 11 of 18 I Review I Consta A cylindrical open tank needs cleaning. The tank is filled with water to a height ho = 1.00 meter, so you decide to empty it by letting the water flow steadily from an opening at the side of the tank, located near the bottom. The cross-sectional area of the tank is Aj = 0.785 square meters, while that of the opening is A2 = 0.002 square meters. Part A %3D How much time t/2 does it take to empty half the tank? (Note: A useful antiderivative is 1/2 da = 2x/2) Express your answer numerically in seconds. Take the free-fall acceleration due to gravity to be g = 9.81 meters per second per second. %3D • View Available Hint(s) ? t1/2 = Submit Nex Provide Feedback MacBook Air DII DD 000 esc F9 F10 FL F4 F5 F6 F7 FB F2 F3 F1 * @ %23 %24 3 5 8 9 * 00

Determine the pressure at the bottom of a drum 0.50m deep and filled with water.

A swimming pool has dimensions 34.0 m x 7.0 m and a flat bottom. The pool is filled to a depth of 1.50 m with fresh water. (a) What is the force exerted by the water on the bottom? N down (b) What is the force exerted by the water on each end? (The ends are 7.0 m.) N outward (c) What is the force exerted by the water on each side? (The sides are 34.0 m.) N outward

d

2- Consider a U-tube filled with mercury as shown in Figure. The diameter of the right arm of the U-tube is D 1.5 cm, and the diameter of the left arm is twice that. Heavy oil with a specific gravity of 2.72 is poured into the left arm, forcing some mercury from the left arm into the right one. Determine the maximum amount of oil that can be added into the left arm. Answer: 0.0884 L Oil poured in here SG=2.72 2D 12 cm D= 1.5 cm Mercury SG= 13.6