A 55.5 kg man walks up a set of stairs in 10.2 s. The man rises 4.5 m in going up the stairs. What is the average power (in Watts) exerted by the man during the climb?

Q: A child pulls on a wagon with a horizontal force of 75N. If the wagon moves horizontally a total of…

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

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Q: Brick load. A load of bricks with mass m = 363 kg is to be lifted by a winch to a stationary…

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Q: A 8.79-kg particle is subject to a net force that varies with position as shown in the figure. The…

A: Part a:  answer: 1.306 m/sec  Part b:  answer: 2.263 m/sec   Part c:   answer: 2.613  m/sec  Thank…

Q: A 1100 kg car drives up a hill that is 15.2 mm high. During the drive, two nonconservative forces do…

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Q: The normal force from the pogo stick on your feet has magnitude Npy(y) = F1(1 −y/h) where F1 =…

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Q: A 4.8 kg body is at rest on a frictionless horizontal air track when a constant horizontal force F…

A: We will answer this question using kinematic equation of motion, Newton's equation of motion and…

Q: A 7.3 kg brick moves along an x axis. Its acceleration as a function of its position is shown in the…

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Q: A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting…

A: Given:            m = 800 kg            v   = 7.5 m/s            h  = 8.7 m            t   =  4 s…

Q: A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting…

A: The answer is below

Q: Consider a system of a cliff diver and the Earth. The gravitational potential energy of the system…

A: Given that gravitational potential energy of the system decreases by 26,000 J so that PE=26000 J…

Q: The figure below shows a person pushing a box with a force of 8.2 N over a displacement of 8.7 m.…

A: Given that:- Force(F)=8.2 N    and Displacement(d)=8.7 m Time(t)=5.0 s Work…

Q: You are curious about how the human heart is able to pump blood up to the brain while standing up,…

A: We are given mass of blood which is pumped to brain each heart beat. We are also given the height…

Q: A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting…

A: Given that: The mass of the helicopter is m=710 kg The initial velocity is u=0 m/s The final…

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

A:

Q: 66. A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The…

A: Given :  mass of helicopter "m"= 810 kg  Initial velocity "u"= 0 m/s (rest)  Final velocity "v"= 7…

Q: Three objects with masses m1 = 6.2 kg, m2 = 14 kg, and m3 = 17 kg, respectively, are attached by…

A: Given:Mass of first object  is 6.2 kg.Mass of second object is 14 kg.Mass of third object is 17…

Q: In 1960, a woman in Tampa, Florida, makes one end of a car that had fallen on her son when he broke…

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Q: "Rocket Man" has a propulsion unit strapped to his back. He starts from rest on the ground, fires…

A: Given, Mass, m = 141 kg  Height, h = 15 m final velocity, v = 5.5 m/s  initial velocity , u = 0 m/s…

Q: When an 78.8-kg adult uses a spiral staircase to climb to the second floor of his house, his…

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Q: 16. A force F = (3i – 5+ 2k)N acts on a particle giving it a displacement of(3i + 4k)m. The work…

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Q: A (6.40x10^1) kg woman runs up a flight of stairs in 5 s. Her net upward displacement is 5 m. What…

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Q: 13. A fighter jet is launched from an aircraft carrier with the aid of its own engines and a…

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Q: saltwater crocodile (Crocodylus porosus) with a mass of 521 kg, is seen chasing prey and reaching a…

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Q: A 3.12-kg particle is subject to a net force that varies with position as shown in the figure. The…

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Q: A 6860 kg car traveling at 41 m/s is at the foot of a hill that rises 491 m in 1.7 km. At the top of…

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Q: A man lifts a 12 kg bucket of water at constant speed, from the bottom of a hole that is 17m deep.…

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Q: A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting…

A: Mass of helicopter M= 780 kg Iniatial speed of helicopter u = 0 Final speed of helicopter v= 10.0…

Q: I am riding an elevator that has a constant upward acceleration while the elevator travels upwards a…

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Q: Power of the Human Heart. The human heart is a powerful and extremely reliable pump. Each day it…

A: Given data:  Volume (V) = 7500 L = 7.5 m3  Time taken (t) = 1 day Height (h) = 1.6 m Density of…

Q: Suppose a 425 g kookaburra (a large kingfisher bird) picks up a 70 g snake and raises it 2.1 m from…

A: Given data:  Mass of bird (mb) = 425 g = 0.425 kg Mass of snake (ms) = 70 g = 0.070 kg Height of…

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: total mechanical energy

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Q: You push a 100 kg wheeled (frictionless) cart across a floor a distance of 13 m by applying a force…

A: Given data:  Mass (m) = 100 kg Displacement (d) = 13 m Force (F) = 10 N Time (t) = 9 s Required:…

Q: A 70 kg rollerblader skates across a skating rink floor. The graph below shows the net external…

A: Write the expression for the work done. W=F→⋅d→W=FdcosθW=(Fcosθ)(d)

Q: Multiple-Concept Example 13 presents useful background for this problem. The cheetah is one of the…

A: Given : Mass of cheetah (m) is 99 kg Final velocity (v) is 26.6 m/s and time (t) is 4.02 sec.

Q: 4. An Olympic weightlifter snatches 100kg. In a snatch, the barbell is moved from a stationary…

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Q: A certain rain cloud at an altitude of 1.46 km contains 3.20 ✕ 107 kg of water vapor. How long would…

A: Take the surface of the Earth to be zero potential energy point. The work done by the pump must be…

Q: How much work must you do to push a 12 kg block of steel across a steel table at a steady speed of…

A: mass of block of steel (m) = 12 kg constant speed (v) = 1.3 mstime (t) = 7.7 seconds μk = 0.6

Q: person pushes a m = 2.60 kg carton a distance d = 4.20 m along the floor by a constant for agnitude…

A: Given:-  m= 2.60 kg  d= 4.20 m  F= 16.0 N  θ=30° Find:-  (a) Determine the work done on the carton…

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 7.44-kg particle is subject to a net force that varies with position as shown in the figure. The…

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Q: A student weighs 150 lbs and walks up a set of stairs from the first floor to the second floor of…

A: mass (m) = 150 lb time (t) = 20 second

Q: A 64.0 kg man, standing on a frictionless walkalator inclined at 0=33.0° below the horizontal, holds…

A:

Q: In a hydroelectric dam, water falls 35.0 m and then spins a turbine to generate electricity. What is…

A: (a)The in potential energy of the water that falls from height h0 is.