How many seconds it itakes to pump 10 tons of water to a tank 5 m up from the pump position with a 1 kW pump.

Q: The kinetic energy of an object varies jointly with the mass of the object and the square of its…

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Q: Significant Powers-of-Ten Notation Figure Notation 4,060,000 m 4.06 x 10 m E. Н. 3SF А. 9.721 x…

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Q: A spring has a natural length of 18 inches and a force of 20 lbs is required to stretch and hold the…

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Q: Kinetic Energy is: KE = mv², where KE = kinetic energy, m =mass, and v =velocity. What is the…

A: Here we have to use the same formula that is given.

Q: How far will a 70 Newton crate be moved if 3500 Joules or work are accomplished?

A: The expression for the work done(W) by any force(F) on a body is given by, W = F×s, where 's' is the…

Q: what is the speed does a meter stick move if its length is observed to shrink to 0.5 m?

A: Given data:  Original Length (L0) = 1 m Contracted length (L) = 0.5 m Required: The speed (v) of the…

Q: A spring, whose equilibrium length is 4 ft, extends to a length of 7 ft when a force of 4 Ib is…

A: Given,equilibrium length of spring 4 ftextend to 7 ftforce, F = 4 lbwork done, W = 8 ft-lb

Q: An object with mass 641 g is moving at the velocity of -7 m/s  What is its kinetic energy in Joule?

A: Given data: Mass of the object = 641 g Velocity of the object = -7 m/s Need to determine the kinetic…

Q: A bakery has a 6,100W oven that runs every day from 5am until 7pm making tasty pastries for the…

A: Given: Power of bakery = 6100 W = 6.1 KW The time of bakery runs per day = 5 am to 7 pm = 14 hours…

Q: What force is needed to move a barrel 25 meters if 225 Joules of work are accomplished?

A: Given ,         work done to move the barrel (W) = 225J         displacement  (d) = 25 m…

Q: What is the work done on an object that moves from x = 1m to x - 2 m when a force, F = 300 N?

A: Given  Force F=300N  Displacement d=2-1=1m

Q: A 14 kilogram boulder falls off a cliff and strikes the ground after falling 40 meters. How much…

A: Given data- Mass of boulder m=14 kg It strikes the ground after falling 40 meters so h=40 m

Q: An electric heater of power 3kW is used for 10h. How much energy does it consume? Express your…

A: The expression for the energy is given by,

Q: 1200 J of work was in lifting a box to a height of 3 m. What was mass of the box?

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Q: A lightbulb has an average power output of 125 watts. If the lightbulb is left on for an hour, what…

A: Given: The power output of the lightbulb is 125 W. The running time of the bulb is 1 hour.…

Q: How much mechanical work is done in letting the 2kg brick fall a distance of 1 meter?

A: Given data:     Mass of the brick, m = 2 kg       Distance, D = 1 m      Acceleration due to…

Q: A 75 kg sprinter accelerates from 0 to 8.0 m/s in 5.0 s. What is the metabolic energy, in kJ…

A: Given data:  Mass (m) = 75 kg Initial velocity (v0) = 0 m/s Final velocity (v) = 8.0 m/s Time (t) =…

Q: A 1,328 kg car is driving up a 992.2 meters mountain. If it will take 1.782 minutes to get to the…

A: Given: The mass of the car is 1328 kg. The height of the mountain is 992.2 m. The time taken by the…

Q: A softball with a mass of 0.18 kg is moving at a speed of 45 m/s. What is the softball's kinetic…

A: The expression for the kinetic energy of the ball is, KE=12mv2

Q: what is one netwon-meter equivalent to? 1. kilowatt * hour 2. watt * sec 3. joule/sec 4. kg *…

A: The newton-metre N·m is a unit of torque in the SI system. One newton-metre is equal to the torque…

Q: A ball with 100 J of PE is released from a height of 10 m. What will be the KE of the ball at 5 m?

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Q: How much work is done by a machine to lift 750 kg of bricks to a height of 8.2 m?

A: Work done = gain in the potential energy by the bricks = m×g×h Here, m= 750 kg            g= 10 m/s2…

Q: How much work is done lifting a 30 kilogram block 3 meters?

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Q: How much work is done to get a 60 kg object to go from 5 m/s to 15 m/s?

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Q: A 1 kg rock is dropped from a height of 6 m. What is the speed of the rock when it just hits the…

A: Given values: Mass, m=1 kg Height, 6 m Acceleration due to gravity, g=9.8 m/s2

Q: A pair of bullocks exerts a force of 160 N on a plough . The field being ploughed is 18 m long . How…

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Q: how much work is done when a 5kg object is lifted vertically a distance of 3 m

A: Given; The  mass of the object is 5kg m=5kg It is lifted to a height of 3 m vertically Upwards To…

Q: If a man pushes a lawnmower with a force of 20 lbs a distance of 60 ft down a yard, how many ftlbs…

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Q: A 1,148 kg car is driving up a 1,692.1 meters mountain. If it will take 2.599 minutes to get to the…

A: The given data are: m=1148 kgh=1692.1 mt=2.599 m Here, m is the mass, h is the height, and t is the…

Q: The kinetic energy of a moving object is KE = 1/2 mv2, where m is the mass and v is the speed. An…

A: Given data:  Mass (m) = 0.22 kg Kinetic energy (KE) = 0.59 million joules Required:  The speed of…

Q: A mass of 39g is placed on the end of a 4.1cm vertical spring. This causes the spring to extend to…

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Q: How much work is done

A: we know work done W = F·d=Fd cosθ where F is the amount of force  d is the distance moved  θ=angle…

Q: what is the kinetic energy of a 25kg object moving at a velocity of 5m/s?

A: Here, we need to find the value of kinetic energy of a moving body.  The formula used for the…

Q: A spring needs a force of 3 N to compress it 37 cm. How much work is required to stretch the spring…

A: force (F) = 3 N compression (d) = 37 cm = 0.37 m

Q: Kinetic Energy is: KE= mv², where KE and v =velocity. What is the kinetic energy of a 1,093 kg car…

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Q: An object of mass 2000g has a speed of 8 m/s and moves a distance of 4m. What is its kinetic energy…

A: Given: mass 'm' = 2000 g = 2 kg speed 'v' = 8 m/s

Q: A 300W computer is used for 90 minutes. What is the energy used in kWh? How much will it cost to run…

A: Given Data: The power used by the computer is: P=300 W The time duration in which P amount of power…

Q: A 35-kW freight elevator with a total mass of 1950 kilograms rises to a height of 25 metres in 32…

A: Actual power required= 35k watt Height gain during the operation= 25 m to find the efficiency of…

Q: how much energy does a 5 kg ball have when it is 2 m above the ground and it is moving at 4 m/s?

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Q: TA spring has a natural length of 14 ft. If a force of 500 lbs is required to keep the spring…

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Q: how much work is done when a box is pushed with a force of 10n for 4 m across the floor

A: Here the force is 10N, and the distance is 4m,

Q: A book on a shelf has potential energy of 200J and two times the mass of a book next to it. What is…

A: Given data The gravitational potential energy for the book is given as PEh = 200 J. The…

Q: A 75 kg sprinter accelerates from 0 to 8.0 m/s in 5.0 s. What is the metabolic power, in kW…

A: Given data The mass of the sprinter is given as m = 75 kg. The initial velocity of the sprinter is…

Q: An object of mass 4 kg has a speed of 9 m/s and moves a distance of 7 m. What is its kinetic energy…

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Q: A dog steps off a ledge and drops to the ground in ½ second. What is its speed on striking the…

A: Given data The time taken by the dog to reach the ground is given as t = 0.5 s The initial velocity…

Q: A weightlifter lifts a 1450 Newton barbell 1.5 m in 3 seconds.  How much power did the weightlifter…

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Q: A man can do a certain task in 21 hours, another man can do the task in 28 hours and a boy can do…

A: The work done by all three in one hour is found as,

Q: A bowling ball is moving at 20 m/sec.  A second bowling ball of equal mass is moving at 10 m/sec.…

A: The work is given by the change in kinetic energy.