Q: The unit of power used in industry is A) Joule B) Watts C) Horse power D) Kilowatts
A: Power: Power is defined as the measure of the rate at which work is done. Power =Energytime Units of…
Q: In isolated system, the total amount of energy is . ......
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Q: A body does 46 Joules of work in 5 seconds. Calculate the power?
A: Introduction : In this question we are provided it value of time taken and work done . With these…
Q: Why must work be done at the beginning of a roller coaster ride in order for the ride to proceed?
A: Roller coasters do not have engines, thus in order to function roller coasters, they are first…
Q: Do devices with efficiencies of less than one violate the law of conservation of energy? Explain
A: Given: devices having efficiency less than 1
Q: a pump can discharge about 181 liters of water in one day. This work done by the pump is equal to…
A: Given data: The amount of water pumped per day, V=181 L. The height of the person for which the…
Q: From an applied "hands-on" point of view
A: First we talk about conservation of energy so,the ball is jumped in the high level of the ground and…
Q: The batmobile of mass 856kg, traveling at 140.9km/h, brakes and comes to a stop. Calculate the work…
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Q: A pump is required to lift 800 kg (about 200 gallons) of water per minute from a well 10 meters deep…
A: Given data: The mass of water taken in t=1 minute is m=800 kg. Depth of well is h=10 m. The…
Q: What horsepower must an electric motor develop to operate a pump that pumps water at a rate of 24…
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Q: Discuss why work & energy have the same unit.
A: Work and Energy have the same unit because they are intimately related by the Work-Energy Theorem.…
Q: A winch is driven by a 4.0 kW electric motor and is lifting a load of 400 kg to a height of 5.0 m.…
A: Formula of efficiency is as follows: η(%)=PoPin×100…
Q: An 20-meter-tall cylindrical tank with a 4-meter radius holds water and is half full. Find the work…
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Q: A pump is used to lift 600 kg of water from a depth of 50 m in 20 sec. Take g= 10 ms ² a. Workdone…
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Q: what is the average power. Work=1885J
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Q: How much power (energy/time) is required to pump 1250 m3 /h of water from a storage vessel to a…
A: Power needed = P W Volume of water (V) = 1250 m3 height = 1m density of water (d) = 1000 kg/m3
Q: A system having a mass of 50 kg is raised to a height of 50 m. If the system is raised to its final…
A: mass (m) = 50 kg height (h) = 50 m time taken (t) = 2 minutes = 120 seconds
Q: Power of the Human Heart. The human heart is a powerful and extremely reliable pump. Each day it…
A:
Q: Calculate the power (in W) of an engine if it can perform 120 J of work in 3 seconds. A) 360…
A: Given:- Work is done by the engine(W) =120 J time (T)=3 sec Find:- Power to do this work in W A)…
Q: What happens to the gravitational potential energy whenwater at the top of a waterfall falls to the…
A: Gravitational potential energy
Q: Discuss the origin of the unit horsepower.
A: Horsepower unit was first time used by James Watt in 1782. The story refers that James Watt uses…
Q: A machine puts out 400 W of power for every 1000 W put into it. The efficiency of the machine is
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Q: what is the potential energy at the first cycle? Remember ME = KE + PE
A: Here given total mechanical energy is 150,000 J. Also given kinetic energy 0 J We have to calculate…
Q: A model aircraft internal-combustion engine produces 10 W of power. How much power is this in (a)…
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Q: A dime has mass 2.268 grams. Calculate the number of years the rest energy of a dime could be used…
A: Given data The mass of the dime is given as m = 2.26 grams. The power of the lightbulb P = 75 W.…
Q: What is the energy change in a washing machine?
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Q: A 10 m chain is hanging from a tall building. The chain has a density of 1.5 kg/m. At the bottom of…
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Q: what is horsepower
A: Horsepower is a unit of measurement used for Power. In layman terms, it is the amount of power an…
Q: the instant of engine height, and falls back.
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Q: A body does 22 Joules of work in 5 seconds. Calculate the power ?
A: Given data: Work (W) = 22 J Time (t) = 5 s Required: Power (P)
Q: 7.4 PQ Apply the grid method to each situation. a. Calculate the energy in joules used by a 1 hp…
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Q: How does a machine make work easier? A machine makes work easier by changing.... Choose the three…
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Q: A certain rain cloud at an altitude of 1.53 km contains 3.20 ✕ 107 kg of water vapor. How long would…
A: height, h = 1530 m mass, m = 3.2 x 107 kg Power, P = 3.05 kW
Q: How many seconds it itakes to pump 10 tons of water to a tank 5 m up from the pump position with a 1…
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Q: In unloading grain from the hold of a ship, an elevator lifts the grain through a distance of 12 m.…
A: Given,height of the elevator, h = 12 mgrain is discharged at the top of the elevator at a rate of,…
Q: how much work per cycle does it deliver?
A:
Q: Efficiency
A: the values provided in the questions are as follows- load = 4000 N effort = 750 N TO CALCULATE…
Q: Write the relation between horsepower and watt.
A: Introduction: Power is defined as the amount of work done in a given time interval. Its SI unit is…
Q: How long will the 4-kW rice cooker run on 3.6x10^6 J of energy?
A: Power×time=Energy≡4×103W×time=3.6×106J≡time=3.6×106J4×103=900s900s=900s60=15minutes
Q: blem 8.71 < 11 of Constants | Penodic A ski area claims that its lifts can move 51000 people per…
A: Given that Number of person N=51000 time t=3600sec height h=290m mass of each person is 70kg
Q: A pump raises a volume of water of 24500 N from a depth of 40 m to the surface of the earth within a…
A: Given data: Weight (W) = mg = 24500 N Depth (h) = 40 m Time (t) = 1 minute = 60 seconds Required:…
Q: Power of the Human Heart. The human heart is a powerful and extremely reliable pump. Each day it…
A: Given, Volume of the blood discharge by heart in a day, V = 7500 L Density of the blood, ρ = 1050…
Q: A pump can discharge about 181 liters of water in one day. This work done by the pump is equal to…
A: Potential energy is given by, E=mgh Here, m is mass, g is acceleration due to gravity and h is…
Q: A heat turbine can generate a maximum power of 250 MW. How much work can the turbine do in 7.8 min?
A: Given Power of turbine = 250 MW Time taken = 7.8 min We have to calculate work done by turbine…
Q: A patient's heart pumps 5.00 L of blood per minute into the aorta, which has a diameter of 1.80 cm.…
A: The flow rate of blood into the heart is 5.00 L /min . Now to convert this into S.I unit, 1 L= 1 cu…
Q: The capacity to do work is called: A) Pressure B) Force C) Power D) Energy
A: The capacity do work is called energy. In other words, energy is the capacity of any physical system…
Q: An 64 kg man runs up stairs and reaches 10 mheight for 12 s. what is his power? Use g = 9.8 m/s ^ 2…
A: Given data: Mass of the man, m = 64 kg Height, h = 10 m Time, t = 12 s Acceleration due to gravity,…
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- Sewage at a certain pumping station is raised vertically by 5.49 m at the rate of 1 890 000 liters each day. The sewage, of density 1 050 kg/m3, enters and leaves the pump at atmospheric pressure and through pipes of equal diameter. (a) Find the output mechanical power of the lift station. (b) Assume an electric motor continuously operating with average power 5.90 kW runs the pump. Find its efficiency.According to a local scientist, a typical rain cloud at an altitude of 2 m will contain, on average, 3×107 kg of water vapour. Determine how many hours it would take a 2.5 kW pump to raise the same amount of water from the Earth’s surface to the cloud’s position.b) According to a local scientist, a typical rain cloud at an altitude of 2 m will contain, on average, 3×10' kg of water vapour. Determine how many hours it would take a 2.5 kW pump to raise the same amount of water from the Earth's surface to the cloud's position.
- A spherical tank of diameter 4 m is half-full of water (weight density = 9800 N/m³). Setup the integral for the work done in pumping the content to a point 3 m from the top of the tank. (Hint: Put the bottom of the tank along the x-axis.) 9800л [*(x-³-9y² + 20y) dy 9800 S* (v²³-7y² +12y) dy -S²(y-³-11y²+28y) dy 9800л 0 9800z²(-y³ + 15y4-72y³ + 112y²2) dy 0A bucket begins holding 25 kgs of sand. The bucket is to be lifted to the top of a 20 meter tall building by a rope with density 0.3 kg/m. However, the bucket has a hole in it, and leaks 0.3 kgs of sand each meter it is lifted. Find the work done lifting the bucket and rope to the top of the building. Use 9.8 m/s² for gravity.A spherical tank of diameter 6 m is full of water. Set-up the integral for the work done in pumping all the content to a point 1m from the top of the tank. 6 9800 T (7-y)(6y-y²)²dy 6 9800 T (7-y)√6y-y²dy 0 9800 T + √² (7-y)√6y-y²dy .6 9800 T (y³ 13y² +42y)dy
- Arteriosclerotic plaques forming on the inner wall of arteries can decrease the effective cross-sectional area of an artery. Even small changes in the effective area of an artery can lead to very large changes in the blood pressure in the artery and possibly to the collapse of the blood vessel. Imagine a healthy artery, with blood flow velocity of vo equals 0.14 m/s and mass per volume of p = 1050 kg/m³. The kinetic energy per unit volume of blood is given pv². This is one of the terms in Bernoulli's equation. Imagine that plague has narrowed an artery to 1/10 of its normal cross-sectional area, a 90% blockage. 1 2 by ko = a) Compared to normal blood flow velocity, vo, what is the velocity of blood as it passes through this blockage? b) By what factor does the kinetic energy per unit of blood volume change as the blood passes through this blockage? c) Using Bernoulli's equation as the blood passes through this blockage, what happens to the blood pressure?A leaky 10-kg bucket is lifted from the ground to a height of 15 m at a constant speed with a rope that weighs 0.5 kg/m. Initially the bucket contains 45 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 15-m level. Find the work done. (Use 9.8 m/s2 for g.)Ex 12 : Calculate the work done in blowing a soap bubble of radius 0.5 cm. Surface tension of soap solution is 2.5 x 10-³ N/m.
- Atmospheric conditions near the Gulf of Mexico are such that a cloud at an altitude of 1.50 km contains 3.20 × 10' kg of water vapor. How long (in years) would it take for a 2.21 kW pump to raise this amount of water (at a constant speed) from Earth's surface to the altitude of the cloud? yrA bucket full of sand has a mass of 20 kg (including the bucket and the sand). The bucket is to be lifted to the top of a building 15 meters tall by a rope of negligible weight. However, the bucket has a hole in it, and leaks 0.1 kgs of sand each meter it is lifted. Find the work done lifting the bucket to the top of the building. Hint: Force = (mass)(acceleration). For this problem, the force will be a product where a m 9.8 82 JoulesSuppose you have an ice cream cone full of melted ice cream. The ice cream cone is in the shape of a right circular cone and is 0.5 feet tall with a width (diameter) of 0.25 feet at the top. You decide to drink the melted ice cream using a straw positioned at the top of the cone. How much work is necessary to drink all of the ice cream through the straw? Note that the approximate weight-density of melted ice cream is 64.05 pounds per cubic foot. Round your final answer to 3 decimal places.