A pump is required to lift 1000 kg of water per minute from a well 20 m deep and eject it at a rate of 20 m/s. (a) How much work is done in lifting water ? (b) How much work is done in giving it a KE? (c) What HP (horse power) engine is required for the purpose of lifting water?

Q: A young couple realized that they overate by 1050 Calories each. To compensate they wanted to…

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Q: A bucket full of sand has a mass of 20 kg (including the bucket and the sand). The bucket is to be…

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Q: s to lift 517 litres of water per minute to a height of 11 m.  What is the minimum power output (in…

A: a)  We know that we have given the amount of water lifted per minute is given  is 517 liters  of…

Q: A trough is 2 meters long, 2 meters wide, and 4 meters deep. The vertical cross-section of the…

A: Find the amount of work in joules required to empty the trough by pumping the water over the top.…

Q: A bucket holding 17kg of sand is being lifted by a weightless rope. The bucket leaks 0.5kg of sand…

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Q: A bucket with mass 2 kg begins holding a mass of 30 kg of sand. The bucket is to be lifted to the…

A: Given values -  Weight of rope is negligible hence -

Q: A man lifts a pail of water of mass m= 3 kg upward at a constant speed of 2 m/s for 5 s. What is the…

A: Given that: Mass of the pail of water, m=3 kg Speed , v=2 m/s time taken, t= 5s

Q: (a) What is the efficiency of an out-of-condition professor who does 2.00 ✕ 105 J of useful work…

A: The efficiency of is calculated as useful workmetabolizing enegy×100%

Q: Steel ball with radius of 0.09 m lays on a bottom of the lake 5 m deep. What work is needed to lift…

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Q: The rectangular cistern (storage tank for rainwater) shown has its top 4 m below ground level. The…

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Q: A tank is is half full of oil that has a density of 900 kg/m³. Find the work W required to pump the…

A: Given, radius of the tank, r = 9 m h =3 maccleration due to gravity, g = 9.8 ms2

Q: As a gasoline engine is running, an amount of gasoline containing 15,000J of chemical potential…

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Q: A rock weighing 20 N falls from a height of 16 m and sinks 0.6 m into a soft soil. Consider f to be…

A: Given data w=20 Nh=16 mh'=0.6 m

Q: What is the efficiency of a subject on a treadmill who puts out work at the rate of 100 W while…

A: Given ,Output power = 100 WInput Power = 700 W (table 7.5 intext book)

Q: what work must be done for a bubble to increase its radius from 5 cm to 8 cm? consider surface…

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Q: A soap bubble is blown to a diameter of 7cm . If 36960 erg of work is done in blowing it furthur ,…

A: The expression for the work done is

Q: tank in the shape of a right circular cone, apex down, is filled with olive oil weighing 45lbs/ft^3.…

A:

Q: The reservoir is filled to a depth of 5 ft, and the water is to be pumped to thesame level as the…

A: No work is done if the water is to be pumped to the same level as the top. Now,Work done(W)…

Q: The second floor of a house is 4.0 m above street level. What is the work required to lift a 300 kg…

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Q: A vertical right circular cylindrical tank measures 32 ft high and 18 ft in diameter. It is full of…

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Q: A bathtub in the shape of a hemispherical bowl of diameter 6 feet is filled with water. How much…

A: Consider a small portion of water in the hemispherical tub with thickness dy at height y from the…

Q: A spherical tank of diameter 4 m is half-full of water (weight density = 9800 N/m³). Setup the…

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Q: A trough is 4 meters long, 2 meters wide, and 3 meters deep. The vertical cross-section of the…

A: Given, a trough has a length  l=4 mw=2 md=3m The vertical cross-section of the trough parallel to…

Q: A spherical tank of diameter 4 m is half-full of water (weight density = 9800 N/m³). Setup the…

A:

Q: Steel ball with radius of 0.11 m lays on a bottom of the lake 4 m deep. What work is needed to lift…

A: Given: The radius of the ball is 0.11 m. The depth of the lake is 4 m. The density of the steel is…

Q: A car requires 170kiloJoules to accelerate from 23m/s to 28m/s. If this happens over 2seconds, what…

A: The required work to accelerate the car is, W=170 kJ The time interval to accelerate the car is, t=2…

Q: A man pushes a lawn mower on a level lawn with a force of 187 N. If 26% of this force is directed…

A: P=Wt=26%Fdt

Q: Suppose that the average U.S. household uses 14100 kWh (kilowatt-hours) of energy in a year. If the…

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Q: (a) What is the efficiency of an out-of-condition professor who does 2.00 x 105 J of useful work…

A:

Q: (a) What is the efficiency of an out-of-condition professor who does 2.30 x 105 J of useful work…

A: a) Given, Work done= 2.3×10⁵ J Food energy= 490kcal  We know that, 1 Joule = (1/4184) kcal 2.3×10⁵…

Q: A tank is full of water. Find the work (in J) required to pump the water out of the spout. (Use 9.8…

A: Radius of tank R = 9 m Density of water ρ = 1000 kg/m³ Distance of a spout = 3 m Work done to pump…

Q: Your brain consumes about 22 W of power,and avocados have been shown to promote brain health. If…

A: Given data: Power consumed by the brain is, P = 22 W Each avocado contains the energy of, E = 310…

Q: Let W = (3.40 x 10° J) In(V-/V). Solve for the unknown quantity in each of the following cases. (a)…

A: Given, an expression for work as follows,W =(3.40×105 J)lnVfViwe have to calculate,(a) the work…

Q: A tank has the shape of an inverted right circular cone with height 9m and radius 18m. It is filled…

A: