3. An automobile having a mass of 2200 kg travels up a 7° slope at a constant speed of v = 100 km/h. If mechanical friction and wind resistance are neglected, determine the power developed by the engine if the automobile has an efficiency of ɛE = 0.65. 7°

Q: Ale A worker lifts a 3000N box by pulling with a force of 300 N on the rope of a pulley system. The…

A: Part-a Given: The weight of the box W = 3000 N. The force applied by the worker F = 300 N. The…

Q: Calculate the electric power produced per square meter of windmill disk area for a windmill…

A: Given, Maximum power coefficient, Cp=0.90×0.70×0.59Cp=0.3717 Air density at sea level at 15°C,…

Q: 4. A 1,380kg sports car accelerates from zero to 35 m/s in 8.0 s. Assume in accelerates at a…

A: Average power is given by   Instantaneous power is given by P = F × V Where  F = Force applied on…

Q: A student evaluates a weight loss program by calculating the number of times she would need to climb…

A:

Q: An underground salt cavern has approximate dimensions of 100m x 500m x 3m. The underground salt…

A:

Q: An automobile having a mass of 2 Mg travels up a 7° slope at a constant speed of v= 100 km/h (Figure…

A:

Q: A chemistry grad student measures the performance Z of the new pump in his lab. The result is:…

A:

Q: A 1600 kg car steadily accelerates from rest to 60 mi/hr over a 2.8 second time span. How much work…

A: Given:mass of car, m = 1600 kgfinal velocity, vf = 60 mi/hr = 26.816 m/s

Q: Find the power available of a small reciprocating engine (J/s) and horsepower (hp) with the…

A:

Q: Q8 (a) (1) Distinguish between renewable and non-renewable energy sources giving an example of each…

A: We are allowed to answer only the first question. For solutions to other questions, please re-post…

Q: Wind is a useful source of energy for generating electrical power for people who live in heavily…

A:

Q: The mechanical power of a cyclist pedaling at a constant speed of 7.5 m / s is 152 W. d) what is…

A: Power  P = F.v  Since, F=v(dm/dt)  P = v2(dm/dt)

Q: 2. Calculate the work done in the following cyclical system: P 3x105 exlos N/m? a lom3 5om? V

A:

Q: A closed system with a mass of 15 lbm is pulled up a rough inclined slope. 8 lbf is applied to raise…

A: Mass of the system: m=15 lbm=1532=0.469 slugApplied force, F=8 lbfDisplacement along the inclined…

Q: The average power output of the human heart is 1.33 watts.(a) How much energy does the heart produce…

A: Power is Time is Note:Find:(a) Energy produces by human heart in one day.(b) Estimate the height a…

Q: A bungee jumper has a mass of 74.3 kg and falls a distance of 113 m before the bungee catches and…

A:

Q: the work done by

A:

Q: In a jet airplane, the kinetic energy imparted to the exhaust gases is wasted as far as propelling…

A: Given: The speed of the airplane is v The relative speed of the expelled gases is u Need to…

Q: (a) How high (in m) a hill can a car coast up (engine disengaged) if friction is negligible and its…

A: Initial speed=76km/h

Q: A man spends 2.4 kJ energy in displacing a body by 48 m in the direction in which he applies force…

A: Given, Work done by man, W = 2.4 kJ distance moved, d = 48 m time, t = 1.5 s

Q: Prof. K. took a Tesla Model S for a test drive. The car weighs 4,500 lb and can accelerate from 0 to…

A: Given: mass of car , m = 4500 lb = 4500×0.454 kg=2041.167 kg change in velocity, v = 60 mph  time, t…

Q: 3. A piece of shattered glass falls from the 82nd floor of a building. 600 feet above the ground.…

A:

Q: A 55 kg child is swinging on a swing with length 4.0 m. When the child stops at the top of its…

A:

Q: You give a 5.0 kg box a quick shove up a ramp. It reaches a vertical height of 3.0 m before…

A: m = 5 kg h = 3 m vf = 0 m/s (Eth)f = 100 J g = 10 m/s2

Q: A power output of 18.0 h.p. is required to overcome friction and move a certain car at a constant…

A: The power required to move a body at a certain velocity is given by P = F×v, where F = the force…

Q: A man spends 3.2 kJ energy in displacing a body by 16 m in the direction in which he applies force…

A:

Q: 68. What is the cost of operating a 3.00-W electric clock for a year if the cost of electricity is…

A: Given data: Power (P) = 3.00 W Time (t) = 1 year Cost of electricity = $0.0900 per kW.h Required:…

Q: When energy is conserved, it has a tendency to increase a total energy during the process, thus it…

A: No, total energy is conserved , so total energy can not be increases during the process.

Q: Let W = (2.70 ✕ 105 J) ln(Vf /Vi). Solve for the unknown quantity in each of the following cases:…

A: Given, W =(2.70×105 J)lnVfViwe are asked to calculate (a)the work done, given, the final volumeVf is…

Q: A 0.5 kg block slides on a rough horizontal table top. Just before it hits a horizontal ideal spring…

A:

Q: A car with mass of 1138 kg accelerates from 0 m/s to 40.0 m/s in 10.0 s. Ingnore air resistance. The…

A: Solution:   Given Values, Mass (m)=1138 Kginitial velocity(u)=0 m/sfinal velocity(v)=40…

Q: Vi= 0 m/s h;= 92.6 m VE = 0 m/s h= 0m A skier, starting from rest slides down a snow covered ramp…

A: Given,Coefficient of the friction between the ramp and the skier, μ = 0.1and the ramp angle of, θ =…

Q: the ground. Due to the combined ford resistance and gravity, it has a speed when it reaches the…

A: Givenh=500 mv=40 m/s

Q: An object is 8.5 cm away from a thin convex lens with focal length of f1 = 3.1 cm. 8.0 cm away from…

A: (a) Scal1 unit in x direction: 1 cm

Q: a) Assume that people can go to work from home either by SkyTrain or by car. Driving takes 10 min if…

A: Given data The time is taken by driving when no one on the road is: t1 = 10 min The SkyTrain takes…