7. Calculate the efficiency of a machine that produces 125 J of work by using 175. J of energy.
Q: A 15.1-kg box is being pushed from the bottom to the top of a frictionless ramp. When the box is…
A: Write the given values with the suitable variables. m=15.1 kgW=58 Ju=0 m/sv=1.50 m/s Here, m, W, u,…
Q: 3. A horizontal force of 5.0 N is used to push a box up a ramp 5.0 m long that is at an angle of 15°…
A: Answer: Given, Horizontal force, F=5N Length of ramp, d=5m Angle above the horizontal, theta = 15°…
Q: .An electric motor has a power output of 1.5 kw. If it operates at 75% efficiency, what work can it…
A: N = 1.5 kW efficiency , = 75% To find = a) Work done in one hour in Joules b) Work…
Q: 7. A 90.0 kg man pushes on a 5.0 x 106 ton wall for 350 s but it does not move. How much work does…
A:
Q: 7. A container factory use a 370 W motor to operate a conveyor belt that lifts containers from one…
A: Given Mass lifted m = 250 kg Displacement h = 3.6 m Time taken t= 45 s Power P = 370 W
Q: 4. An engine that worked for 46 s consumed E = 23,500 J and lifted a in 75 kg body from the ground…
A: Work done for lifting an object from the ground is equal to change in the gravitational potential…
Q: Find the value of work done is 340 J and displacement is 28 m. Find the force applied ?
A: Given data : Displacement = d Work done = W To find : Force
Q: 3. Bart runs up a 2.91-meter high flight of stairs at a constant speed in 2.15 seconds. If Bart's…
A: Given value--- height = 2.91 m. time = 2.15 sec. mass = 65.9 kg. We have to find--- work done ?…
Q: 4. How much work is required for a 1200-kg automobile to increase its speed from 30.0 m/s to 40.0…
A: Energy is capacity to do work. There is one theorem which tells that work and energy are…
Q: A large hoist is lifting a 2000 kg automobile. There is a gauge on the hoist that displays its power…
A:
Q: 9. can be stated as the net work done on an object is equal to the change in the object's kinetic…
A: Question to answer : ___________ can be stated as the net work done on an object is equal to the…
Q: 6. Research the power of two different things and report back their power in watts Eg. An onland…
A: 6. Power is amount of energy transferred or converted per unit time. A solar panel can produces…
Q: 500 joules of work was done in 10 seconds, the power used was A. 0.025 watts B. 0.025 N C. 40 N D.…
A: Given value--- work = 500 J. time = 10 sec. We need to find--- Power ?
Q: 11. You take a ride in a wagon. The wagon’s mass (including you) is 200 kg. A horse pulls it with a…
A: Total mass, m=200 kg Pulling force by the horse, F= 78.9 N Speed of the mass, v=3.7 m/s Displacement…
Q: What is the power in watts of a motor rated ¼ hp?…
A: Given: The power is 1/4 hp.
Q: Calculate the force needed to do 500 J of work while pulling a cart a distance of 3.4 m.
A:
Q: 1. What amount of work is done when a 5 newton object is moved a distance of 10 meters?
A: Given data: Force (F) = 5 N Distance (d) = 10 m Required: Work done (W)
Q: You carry a 20. N bag of potatoes up a 5.0 m flight of stairs in 26 seconds. How much work was done?…
A:
Q: pa 21° incline w
A: Given: Mass of bundle is 6.2 Kg Incline is 21o Kinetic energy is 144 J Kinetic friction coefficient…
Q: 1. If you pushed a 20 kg box across the floor for a distance of 60 m with a force of 15 N how much…
A: #1 Given data: The mass of box is m=20 kg. The distance traveled by the box is d=60 m. The force…
Q: 2. How much work is done by 15 kW engine during 3.5 min?
A: Given value--- power = 15 kW. time = 3.5 min . We have to find--- work ?
Q: 6. A truck weighing 1,000 kg runs at 120kph carrying a load of 1,200kg at its back. It travelled at…
A: Given, mass of truck is mt=1000kg the velocity of the truck vt=120kph mass of load is ml=1200kg…
Q: 10) A floor polisher supplies an average of 1000W of power. If the floor polisher is used for 10…
A: Given: The average power is 1000 W. The time interval is 10 min.
Q: 1. On a level road, you phyllis a 25.7kg wagon with a force of 29.4 newtons for a distance of 16.7…
A: We have a wagon of mass m=25.7 kg on which a force of magnitude F=29.4 N is applied to movie it to a…
Q: Calculate the work done by a 1500 watts appliance if it runs for 300 seconds
A: As per our guidelines, we are supposed to answer only first one question in case of multiple…
Q: What work is done by a force of 20 N acting through a parallel distance of 8 meters. What force will…
A: Given: Work is done by a force of 20N acting through a parallel universe of 8 meters. To…
Q: The total energy required to move a 10-N block up a 25-degree incline for 10 meters is 500 Joule. A…
A:
Q: 12. When you go upstairs, you a. do more work when you walk than when you run b. do less work when…
A: 12.) Work depends on force and displacement only as force acting during running or walking is weight…
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: 4. If it takes a 100-N force to lift one shovel full of snow up 1.5 m, how many shovels full could…
A: Solution:-Given thatForce (F)=100 NDisplacement (d)=1.5 mTotal energy (E)=28 kJ=28000 J
Q: A 60-kg woman runs up a flight of stairs having a rise of 4.0 m in a time of 4.2 s. What average…
A: Given data: Mass (m) = 60 kg Height (h) = 4.0 m Time (t) = 4.2 s Required: The average power (P)
Q: How much work is it to lift a 25 kg sack of cement vertically 4.3 m?
A: Given , Mass of sack of cement (m)= 25 kg Sack of cement lifted vertically h= 4.3 m
Q: 6. A truck weighing 1,000 kg runs at 120kph carrying a load of 1,200kg at its back. It travelled at…
A: The correct option is 0J Because,
Q: 3. An electric motor used to lift an elevator has power rating of 26.74 kW. If it can carry a…
A:
Q: 5. Calculate the work being done on 2000 N crate, being lifted 2 meters off the ground by a crane.…
A:
Q: 92. It is defined as the rate at which work is done. * a. Joule O b. Newton O c. Speed O d. Power O…
A: The work is defined as W=F→·d→ Here F→ is force and d→ is displacement. The force is F→=ma→ Here m…
Q: 11. You push down on a 4.0 N box against the floor for 2 minutes. How much work was done? How much…
A: The force applied, F=4 N The time for which the force is applied, t=2 min
Q: 5.A hiker climbs from an elevation of 1,500 ft to the top of a mountain whose height is 3,800 ft…
A: Given Mass (m ) = 95 kg h1 = 1500 ft = 1500 × 0.305 m h2 = 3,800 ft = 3,800 ×…
Q: How much work is done in moving a 130-kg crate along a rough floor 3.6 m without acceleration if the…
A: Solution: As there is no acceleration, the applied force,F =…
Q: 3.The Work-Energy Principle states that work is equal to the change in kinetic energy. What unit…
A:
Q: 44. A metal ramp 6.00 m long is tilted 10.0° and is used to load and unload a moving van. Suppose a…
A: Solution-a) Calculating the height of the ramp:We know the length (L) of the ramp is 6.00 m and the…
Q: The energy of 723 BTU is supplied to a blower per minute. How much power (in kW) is supplied for…
A: Given: The energy (E) of 723 BTU is supplied to a blower per minute. Introduction: The power (P) of…
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