1) A tank is full of water. Find the work W required to pump the water...

1) A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 m/s² for g. Use 1000 kg/m³ as the weight density of water. Assume that a = 4 m, b = 4 m, c = 12 m,and d = 1 m.)
W = ___ J

I got 5017600 then in scientific notation it would be 5.0176 X 10^6, then in Juls in would be 5.02?

I got the answer wrong an would like to know how you do this problem?

2. Suppose that 5 J of work is needed to stretch a spring from its natural length of 32 cm to a length of 44 cm.

(a) How much work is needed to stretch the spring from 40 cm to 42 cm? (Round your answer to two decimal places.)
1.25 J

(b) How far beyond its natural length will a force of 40 N keep the spring stretched? (Round your answer one decimal place.)
? cm

for B I got 11.52, did I do something wrong?

Expert Solution

milcah answered 2 years ago

Find the work (in ft-lb) required to pump all the water out of a cylinder that...

Find the work (in ft-lb) required to pump all the water out of a cylinder that has a circular base of radius 6 ft and height 200 ft. Use the fact that the weight-density of water is 62.4 lb/ft3. Find the work (in ft-lb) required to pump all the water out of the cylinder if the cylinder is only half full.

1. One pump is not enough to pump water to a very high tank. If you...

1. One pump is not enough to pump water to a very high tank. If you use two pumps (to increase h), how are you going to install them? (a) in parallel (b) in series 2. For turbulent flow of all pipes, friction factor (f) depends on: (a) Reynolds number (Re) only (b) relative roughness (e/D) only (c) both Re and e/D 4. For a pumping system, which tends to cause cavitation? (a) placing the pump close to the source...

Find the work done by pumping out water from a tank of the shape of (a)...

Find the work done by pumping out water from a tank of the shape of (a) a sphere, (b) a circular cone Please give a detailed explanation of how you would set up to solve a problem like this

A pump lifts 1000 (liters) of water from ground to a tank on the roof of...

A pump lifts 1000 (liters) of water from ground to a tank on the roof of a building 100 (m) high. What is the potential energy in the water? [ 1 (liter) = 1000 cm3 ]. Show all your steps to the solution. A skier is coming downhill. At one point she is 50 (m) above the bottom of the hill and moving at 20 (m/s). What is her speed as she reaches the bottom of the hill? 22.3 (m/s)...

1) A full rectangular water tank has a base of 10 ft x 15 ft and...

1) A full rectangular water tank has a base of 10 ft x 15 ft and is 20 ft high. What is the pressure at the bottom of the tank in a) PSI b) Pa 2) A cargo ship has a volume of 10,000 cubic meters. The total mass of the ship and cargo is 8 million kg. Will it sink or float at the surface of seawater having a density 1025 kg/m3? Why?

5. A large tank of water is full and has a depth of 10.0 m. What is the pressure at the bottom of the tank?

5. A large tank of water is full and has a depth of 10.0 m. What is the pressure at the bottom of the tank? What would the velocity of the water be if the tank was opened at the bottom? 6. A Two balloons of identical volume (radius 11.5 m) are filled with gas. The first with helium, the second with hydrogen (H2) gas. Each balloon and cage have a mass of 750 kg. What is the lift...

2. A pump delivers 30o C water from a supply reservoir to an elevated storage tank...

2. A pump delivers 30o C water from a supply reservoir to an elevated storage tank at a discharge rate of 120 litres/sec. At this discharge the manufacturer’s data indicates the net positive suction head (NPSH) for the pump is 6.0 m. The water surface elevation difference between the reservoir and the tank is 45.0 m. The total length of pipe between the two is 150.0 m, 10.0 m of which is located on the suction side of the pump....

Part A: How much work (in J) is required to expand the volume of a pump...

Part A: How much work (in J) is required to expand the volume of a pump from 0.0 L to 2.8 L against an external pressure of 1.2 atm ? Express your answer using two significant figures. W = Part B: What is the mass of the silver block? Express your answer to two significant figures and include the appropriate units. A silver block, initially at 55.6 ∘C, is submerged into 100.0 g of water at 24.2 ∘C, in an...

A 32 inch diameter pump handling 22000 GPM flow of water coming from an atmospheric tank...

A 32 inch diameter pump handling 22000 GPM flow of water coming from an atmospheric tank storage is running at 1170 rpm. The water temperature can be taken at 25 C. The suction line is 20 meter long at 6 inch diameter. The pump suction is 0.4 meter above ground level. The tank storage is elevated on a 1 meter high platform. Assume friction factor of 0.02. Specific Gravity of water at 25 C is 0.9967. NPSH required is 34...

A small water pump is used for an irrigation project. The pump takes water in from...

A small water pump is used for an irrigation project. The pump takes water in from a river at 10oC, 100 kPa at a mass flow rate of 16.83 kg/s. The exit line enters a pipe that goes up to an elevation 26.15 mm above the pump and river, where the water runs into an open channel. Assume the process is adiabatic and that the water stays at 10 oC. Find the required pump work.

Question