In a dam, water is flowing at the rate of 1400 kg/s and falls from 40 m height. The power is generated by the falling water is O a. 548.8 kW O b. 56 kW O c. 13.7 kW O d. 548.8 MW

Q: 10. A small motor is used to operate a lift that raises a load of bricks weighing 1200 N to a height…

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Q: When a flea (m = 600 μg) is jumping up, it extends its legs 0.5 mm and reaches a speed of 0.50 m/s…

A: According to the kinematics equation, find the acceleration of the flea.Substitute the values,

Q: During the Powerhouse lab, Gab runs up the stairs, elevating his 98 kg body a vertical distance of 3…

A: Given: The mass of the object is 98 kg. The vertical distance covered by the object is 3 m. The time…

Q: A 67 kg yak has an average power output of 200 W. How long can a yak climb a 3km high mountain?…

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Q: 16. A diesel-powered crane (mc = 2.93 x 10° kg) is lifting a heavy block of concrete mb = 8.44 x 104…

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Q: Power Produced by a Windmill When the wind blows with speed v km/h, a windmill with blade length 150…

A: Power generated by windmill is given by relation:  Power: P = 15.6 v3 Where v is the speed of wind…

Q: 4. In a time t=18.00 s, a 60.0-kg student runs at a steady pace up two flights of stairs whose…

A: Given data:  Time (t) = 18.00 s Mass (m) = 60.0 kg Vertical height (h) = 7.80 m Required: Power…

Q: How much power is required to lift a heavy solid concrete beam with mass 91.22 kg upward with a…

A: Given Mass =91.22 kg speed v =3.8 m/s

Q: The motor in a 1590-kg Nissan Leaf electric car supplies energy to the wheels at the rate of 80.0…

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Q: A 1,000 kg sports car accelerates from 0 to 30 m/s in 13 s.  What is the average power of the…

A: Mass of the car,(m)=1000 kg ----(1) [Given] The initial velocity of the car,(vi)=0 m/sec ----(2)…

Q: •8 A ice block floating in a river is pushed through a displacement d = (15 m)i – (12 m)j along a…

A: The displacement of an ice block,

Q: A car of mass 1200 kg travels along a horizontal road at a speed of 10 ms'. At the time it begins to…

A: GIVEN THAT    m =  1200 kg      speed = 10 m/s      acceleration = 0.2 m/s2    resistive force = 160…

Q: 9. A car of mass 1550 kg traveling at 27.0 m/s is at the foot of a hill that rises 110 m in 2.60 km.…

A: Average power is defined as the ratio of total work done by the body to the total time taken by the…

Q: What average power would a 1500 kg speedboat need to go from rest to 25 m/s in 6 seconds if the…

A:

Q: A 11.7 kg sled starts from rest at the top of a hill that is inclined at 29.3 degrees to the…

A: Given data as per question mass of sled =  11.7kg angle made with horizontal   =  29.3 distance  =…

Q: When its engine of power 76 kWkW is generating full power, a small single-engine airplane with mass…

A: Given:               Engine Power , P = 76 kW = 76×103W                                mass  M= 710…

Q: A cheetah can accelerate from rest to 6.4 m/s (about 16 m/h) in 1.2 seconds. How much average power…

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Q: A 64.0 kg man, standing on a frictionless walkalator inclined at =33.0° below the horizontal, holds…

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Q: A 72.0 kg swimmer jumps into the old swimming hole from a tree limb that is 3.45 m above the water.…

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Q: A 160-kg object is lifted at a constant speed through a height of 36 m by a crane. If the crane…

A: If a body is lifted up to a height  with a constant speed, the force needed is equal to its weigh…

Q: 16. A 1500 kg car accelerates uniformly to a speed of 18 m/s in 4.59 seconds. Find the average power…

A: Given :    mass, m = 1500 kg    speed, v = 18 m/s    Time, t = 4.59 s We have, acceleration , a = vt…

Q: A model train powered by an electric motor accelerates from rest to 0.640 m/s in 22.0 ms. The total…

A: Given Information,Initial Velocity u=0Final Velocity v =0.64 m/stime(t) = 22 ms  = 22×10-3…

Q: An 1800 kg car starts from rest and accelerates to 25.0 m/s in 16.0 s. The force of air resistance…

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Q: A teenager is taking a 'Bird' scooter out for a joyride. He decided he wants to take the scooter to…

A: Given- mass of boy , m= 65 kg  Height of hill , h = 30 m As boy starts from rest , hence his initial…

Q: A stone with a mass of 2.40 kg is moving with velocity (6.20î – 1.80ĵ) m/s. (HINT: v² = v · v.) (a)…

A: Given  Massof stone m=2.40kg Initial velocity vi=6.20i-1.80j Final velocity vj=8i+4j

Q: A 64.0 kg man, standing on a frictionless walkalator inclined at θ=33.0° below the horizontal, holds…

A: Mass of the man M=64 kg, mass of the grocery cart m=12.8 kg, inclination of the walkalator below the…

Q: A toy robot powered by an electric motor accelerates from rest to 0.800 m/s in 22.0 ms. The total…

A: Write a given value of this question. v=0.800m/s t=22ms=22×10-3sm=740g=0.740kg

Q: Q14) A 55-kg athlete climbs an 8 m long rope in 10 s. His average power output (in W) is A) 431 B)…

A: Mass of athelete = 55 kg  Vertical distance = 8 m  Time = 10 second

Q: 1. A car of mass 800 kg moves at a constant speed of 36 km/hr up a 1 in 8 incline. The top of the…

A: g=Acceleration due to gravity=9.81 m/s2m=Mass of car=800 kgv=Velocity of car=36 km/hr=363.6 m/s

Q: 47. A 1500 kg car accelerates from rest to 75 km/h in 45s. How much power is supplied by the engine…

A: Given data: Mass of the car, m=1500 kg Since car starts from rest, we can take initial velocity,…

Q: The power source for a non-electric grandfather clock is a 12.0 kg weight that hangs by a chain and…

A: The work done by the power source is, W=mgd=12.0 kg9.8 m/s20.750 m=88.2 J The time period is, t=1…

Q: A tadpole swims across a pond at 5.50 cm/s. The tail of the tadpole exerts a force of 28.0 mN to…

A:

Q: A 65.00-kg runner begins her exercise by moving with a velocity of 2.50 m/s. She then runs up a…

A: Kinetic energy is given by,  KE=12mv2 Potential energy is given by , PE=mgh Given : Mass m=65 kg…

Q: You are using a rope to lift a 14.5 kg crate of fruit. Initially you are lifting the crate at 0.500…

A: Part D) The force of gravity and the direction of movement are opposite to each other. So, the work…

Q: An engine uses 20000 N of force to power a car at an average speed of 5.0 m/s. What is the average…

A: POWER =FORCE×VELOCITY

Q: When a car is moving at constant speed, the developed potential is used to overcome the frictional…

A: Given Data: The power developed by the car is P = 50 hp. The velocity of car is v = 24.6 m/s. The…

Q: A car's engine generates 80000 W of power as it exerts a force of 6000 N. How long does it take the…

A: Given: The power of the engine is 80000 W. The force exerted by the engine is 6000 N. The…

Q: A pump lifts water at the rate of 6 m^3/s to a height of 120 m and the friction loss in the pipe is…

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Q: A 1631-kg car coasts in neutral down a 2.00 degree hill. The car attains a terminal speed of 20.0…

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Q: 1. A car with a mass of 2,000 kg drives to the top of a 100-meter hill in 15.0 seconds. Find the…

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Q: a bucket of water is raised from the bottom of a well to the top in 20 seconds. it took 5000 j to…

A: Given data:   Time (t) = 20 s Work done (W) = 5000 J Required: Power (P)

Q: A person used 60 W of power to carry a 55 N box up a 5 m ladder. How long did it take him to do…

A: We know, work done (w)= Force×displacement =F×d And power(P)= W/t So time taken to do the work (t) =…

Q: A woman uses a pulley and a rope to raise a 20 kg weight to a height of 2 m. If it takes 4 s to do…

A: mass, m = 20 kg  height, h = 2 m  time, t = 4s  The formula for energy is  E = m g h  The power is…

Q: An accelerating object of mass m=14 kg is fired with an initial speed v-2 m/s at a starting point.…

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Q: A 1520kg of car accelerates from rest to 45 m/s in 8.2 s. The average power delivered by the engine…

A: The mass m=1520kg  To find the average power

Q: A 1500 kg sports car accelerates from rest to 95 km/h in 7.0 s What is the average power delivered…

A:

Q: A toy robot powered by an electric motor accelerates from rest to 0.740 m/s in 20.0 ms. The total…

A: