How much work can a 6.0-hpmotor do in 3.0h?Express your answer to two significant figures and include the appropriate units.

Q: An accelerating object of mass m=20 kg is fired with an initial speed v;=3 m/s at a starting point.…

A: Given: mass of an object, m = 20 kginitial speed, vi = 3 m/sfinal kinetic energy, KEf = 122 J

Q: A 4.15 kg bundle starts up a 33.3° incline with 149 J of kinetic energy. How far will it slide up…

A:

Q: As part of a charity fund raising drive, a runner with mass 50.0 kg runs up the stairs to the top of…

A: Mass of the runner=50kgHeight=443macceleartion due gravity=g=9.8m/s2Increase in potential…

Q: How much power is needed to uniformly accelerate a 1000-kg test car from 30 kph to 70 kph as it…

A:

Q: A student weighing 551 N climbs at constant speed to the top of an 14 m vertical rope in 17 s. What…

A:

Q: A 4.23 kg bundle starts up a 22.4° incline with 103 J of kinetic energy. How far will it slide up…

A: The expression from work energy theorem,

Q: A 400 kg dragster accelerates from rest to a final speed of 120 m/s in 400 m (about a quarter of a…

A:

Q: A tandem (two-person) bicycle team must overcome a force of 195 N to maintain a speed of 8.75 m/s.…

A: Given, Force = 195 N speed = 8.75 m/s a) Power = Force ×velocity

Q: A 650 kg dragster accelerates from rest to a final speed of 110 m/s in 400 m (about a quarter of a…

A: Given, vf= 110 ms, d=400 m, fk=1200 N, vf= 0 ms, t=7.30 s…

Q: Whiles training, a 73.0 kg athlete  runs up a flight of stairs having a rise of 6.4 m in a time of…

A: In this question it is given that  Whiles training, a 73.0 kg athlete runs up a flight of stairs…

Q: You do 5.8 J of work to stretch a spring with k = 190 N/m, starting with the spring unstretched. How…

A:

Q: A 10 kg mass is released from rest from the top of a 2 m long ramp, inclined at 30°. The speed of…

A: 7) work done by the friction = final kinetic energy - initial potential energy W = (1/2)(10)(2)2 -…

Q: You do 11.7 J of work to stretch a spring with k = 190 N/m, starting with the spring unstretched.…

A: Given data: The work done is W=11.7 J. The spring constant is k=190 N/m.

Q: How much power is required to lift a heavy solid concrete beam with mass 285.63 kg upward with a…

A:

Q: A 950 kg car accelerates from rest with a constant power of 145 hp. Neglecting air resistance, what…

A: The power is given by, P=145 hpP=145 hp745.7 W1 hpP=108,126 W The energy gained in 5 s is,…

Q: A windmill can generate 4.9 x 103 W of power.  How long will it take to fully  cook a leg of lamb…

A: Given in question -   Power of windmill (P) = 4.9 x 103 W                                     Work…

Q: An elite Tour de France cyclist can maintain an output power of 450 W during a sustained climb. At…

A: The output power of cyclist,   The mass of the cyclist and bike together,   The initial vertical…

Q: A 500 kg elevator cab is descending with speed vo = 4 m/s when the winch system that lowers it…

A:

Q: How much time is required for a elevator to lift a 2000 kg load up 28 m from the ground level, if…

A: Given data: Mass m = 2000 kg Distance from ground level d = 28 m Power P = 13 kW

Q: A crane operating with power of 1225 W needs to lift a 500 kg mass to height of 30 m. About how ong…

A: Given:- mass of the object m= 500 kg  height h = 30 m  The power P =1225 W  Find:- how long will it…

Q: It takes a force of 1450 N to keep a 1300-kg car moving with constant speed up a slope of5.25°. If…

A:

Q: An engine develops 10 kW of power. How much time will it take to lift a mass of 200 kg to a height…

A: Given data :- Power P = 10 kW = 10 × 1000 W = 10000 W mass m = 200 kg height h = 40 m g = 10 ms-2

Q: power

A: Given: Mass of the dragster = 650 Kg initial speed = 0 final speed = 110 m/s Distance= 400 m…

Q: A warehouse worker uses a forklift to lift a crate of pickles on a platform to a height 3.75 m above…

A:

Q: How much work is done in lifting a 61.2 kg crate a vertical distance of 10 meters? (Remember: F =…

A: mass of crate (m) = 61.2 kg Vertical distance (h) = 10 m g = 9.8 ms2

Q: 450 kg racecar can go from 0 to 60 km/h in 10.0 s. What is the average 6. power is required to do…

A: Dear student The change in potential energy between two horizontal levels is defined as : ∆U = mgh…

Q: Suppose a 825-kg car can produce a useful power output of 45.5 hp (1 hp = 746 W). How long, in…

A: a)Calculate the work done using work energy theorem.

Q: Joule is a unit of the following: work, power, potential energy, and kinetic energy, true or false?

A: Work: Work = Force ×Displacement      W = F ×S Units of work:    1 J = 1 N m   Power: Power = Work…

Q: A crane lifts a load of 6000 N through a vertical distance of 15 m in 30 s.What is the average…

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Q: fit takes 5 Jof work to stretch a Hooke's-law spring 10 cm from its unstressed length, determine the…

A:

Q: Consider a 1400-kg car cruising at constant speed of 70 km/s. Now the car starts to pass another…

A: The power required is the ratio of the work that must be done to time and the work done will be…

Q: What is the dominant factor that affects the speed of an object that started from rest down a…

A: Work done on an object

Q: How much power is required to lift a heavy solid concrete beam with mass 253.23 kg upward with a…

A: Write the given values with the suitable variables. m=253.23 kgv=4.83 m/s Here, m is the mass and v…

Q: The unit of horsepower was defined by considering the power output of a typical horse. Working-horse…

A: Given: The mass of the horse is 1200 lb. The speed is 3.0 mph. The percentage of weight is 10%.

Q: Can a machine multiply input force? Input distance? Input energy?

A:

Q: Calculate the power required to raise a 20kg object to a height of 10m in 1 minute.What assumptions,…

A: Given Data:- Mass of the object is m=20 kg Height at which the object is raised h=10 m Time t=1…

Q: The engine of the car has a power of 355 hp. If it 800 kg and moves horizontally, what will be its…

A: Power of engine "P"= 355h.p = 264.72kW. mass of car "m"= 800 kg  time taken "t"= 7sec . initial…

Q: A large roller in the form of a uniform cylinder is pulled by a tractor to compact earth; it has a…

A: Given data: Diameter of roller is, d=180 cm=1.80 m. Weight of roller is, W=10 kN=10×103 N. Initial…

Q: An initially (t = 0) stationary 2.0 kg object accelerates horizontally and uniformly to a speed of…

A: Solution

Q: You do 6.4 J of work to stretch a spring with k = 190 N/m, starting with the spring unstretched. How…

A: Given data: Work done (W) = 6.4 J Spring constant (k) = 190 N/m Initially spring is unstressed…