2. How much power does a person produce when they do 450 J of work in three seconds? O 900 W O 225 W O 150 W O 450 W

Q: A car is cruising at a constant speed of 24 m/s. If the frictional force acting on the car is 571 N,…

A: Given: Speed of car v = 24 m/s Frictional force acting on the car f = 571 N

Q: A car uses a power of 100 W within 25 seconds to operate. What is the work done?

A: Write the given values with suitable variables. P=100 Wt=25 s Here, P denotes the power and t…

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

A:

Q: The person does work on the lawn mower. Under what conditions would the mower gain energy? Under…

A: In the figure it is shown, man is pushing a mover and is doing a work  From this work of the…

Q: A 60.0-kg skateboarder comes over the top of a hill at 5.00 m/s and reaches 10.0 m/s at the bottom.…

A:

Q: 20. A 7.00-kg bowling ball moves at 3.00 m/s. How fast (in m/s) must a 2.45-g Ping-Pong ball move so…

A:

Q: 3. If a riding lawnmower engine exerts 19 hp in one minute to move the mower, how much work is done?…

A: (3) The power exerted by a lawnmower’s engine is, The time taken by the mower is,

Q: How much work (in J) must be done to lift a stack of bricks, which has a mass of 50 kg, from the…

A: Given data The given mass is m=50 kg The height is h=8 m The accleration due to gravity is g=10 m/s2…

Q: how much work can 150 w motor do in 3 mintutes

A: (given) Power (P) of motor = 150 watt time (t) = 3 minutes = 180 sec Power: Power is the rate at…

Q: A person does some work of 1,000 J in 2 s. His power will be ...... A) 1000W B) 25W C) 500W…

A:

Q: 6. If an engine can produce 670 J of energy in 1 min, how many watts can it output?

A: as per our guidelines we are supposed to answer only one question. Kindly repost other question as…

Q: How much work is done when a force of 806.0 N is exerted while pushing a crate across a level floor…

A:

Q: A force of 434.0 N is exerted on a 1,250 N car while moving it a distance of 2.65 m. How much work…

A: Express the relation for the work done on the car. W=Fd Here, W is the work done, F is the force…

Q: If a person of mass 100.0kg climbs a 2.0m high set of stairs in 4.0s, how much power do they…

A: Given, Mass of person m = 100 Kg  height of stairs h = 2 m time to climb stairs t = 4 s    We know…

Q: An 80.0 kg student runs up a flight of stairs that is 8.0 m tall. How much work have they done going…

A: The mass of the student is m = 80 kg. The height of the flight of staircase is h = 8.0 m

Q: All the following are units of power except a. hp b. watt С. J/s d. N.m/s e. kg.m/s^2

A:

Q: A 1250 kg car is moving at 16.6 m/s. Then, 377 kJ of work is done on the car to increase its speed.…

A: According to work-energy theorem, the work done by the net force on a body is equal to change in…

Q: How much work can a 120 W motor do in 3.0 seconds? (120 W is the power of the motor.) Your answer:…

A: Power of the motor, P=120 wTime taken by the motor for working, t=3.0 sWork done by the motor…

Q: How much power is needed to lift a 12.5 kg sack of rice from the ground to a height of 1.5 m within…

A: According to guidelines we need to solve only first question kindly repost other questions in the…

Q: A 95 kg man runs up a 20 m high stairs at a constant speed. If it takes him 8 seconds to reach the…

A:

Q: 13. A 700-kg horse whose power output is 1.0 hp is pulling a sled over the snow at 3.5 m/s. Find the…

A:

Q: A leamer weighing 800N runs up 20 stairs each 20cm high in 4 seconds. How much power is exerted by…

A:

Q: Do 100 J of work in 50 seconds and your power output is   A. 1/2 W   B. 2W   C. 4W   D. 30W

A: The power output can be determined as, Here, W and t represent the work and the time, respectively.

Q: what is the kinetic energy in joules of a 1120-kg automobile traveling at 88 km/h?   2. how much…

A: Given, Mass, m = 1120 kg Speed, v = 88 km/h = 88×518=24.44 m/s

Q: An 82 kg man in basic training climbs a 16 m vertical rope at constant speed in 8 s. What is his…

A: mass of man (m) = 82 kg height (h) = 16 m time (t) = 8 seconds

Q: Suppose a car travels 108 km at a speed of 35.0 m/s, and uses 2.10 gallons of gasoline. Only 30% of…

A:

Q: A child does 403j of work while pulling a box from the ground up to his tree house at a steady speed…

A: Given  Work done W=403J Height h=4.8 m g=9.8 m/s2

Q: 10. The power of a motor is 40 kW. At what speed can the motor raise a load of 20,000 N ? Ans. 2 ms

A:

Q: 6. A person weighing 600 N gets on an elevator. The elevator lifts the person 6 m in 10 seconds. How…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 44. The work done when the point of application of a force F=(15i+7k)N moves through a displacement…

A:

Q: When a car of mass 1175 kg accelerates from 14.2 m/s to some final speed, 320 kJ of work are done.…

A: Mass of a car (m) = 1175 kg Initial speed (vi) = 14.2 m/s Work done (W) = 320 kJ = 320 x 103 J

Q: Find the useful power output (in W) of an elevator motor that lifts a 2300 kg load a height of 30.0…

A: We know that the formula of the power is given as  Power = EnergyTime  We know that the energy is…

Q: Calculate the work done by a 2.4 N force pushing a 400 g sandwich across a table 0.75 m wide.

A:

Q: 21. A1000-kg car has a KE of 450kJ. The car’s speed is   22. A3200-lb car whose speed is 60mi/h…

A: Solution-21             Mass of car m=1000 kg,   kinetic energy=450 kJ=450000 J  Kinetic energy is…

Q: (II) How much work can a 2.0-hp motor do in 1.0 h?

A: Formula of work done is as follows; W=Pt…

Q: 4.00 × 105 J of work are done on a 1374 kg car while it accelerates from 10.0 m/s to some final…

A: The relation between work done and total energy,

Q: Starting from rest, a 1.00 kg crate is accelerated across a floor at a rate of 3.0 m/s^2 for 0.50…

A: Givenmass of crate(m)=1.00 kgacceleration(a)=3.0 m/s2 time(t)=0.50 minutes=30 secondsinitial…

Q: Jeanine used 250 J of energy to lift a 15 kg box. How far did she lift the box? A 1.7 m

A: Given Energy used = 250 J Mass m =15 kg We know that Acceleration due to gravity g = 9.8 m/s2

Q: A crane that's powered by a 175 watt motor lifts a crate 10.5m in 12.0s. What is the mass of the…

A: Power of motor (P) = 175 watt Distance (d) = 10.5 m Time (t) = 12 seconds

Q: Q33. Calculate the distance between a man and a box when 100 J of work done to move the box with a…

A: Force applied on box= 15 N Work done= 100 J

Q: 4. A train of mass 200 tonnes moves on a level track having a track resistance of 85 newtons per…

A:

Q: A boy of mass 35 kg climbs a vertical rope 10 meters in length in 12 seconds with constant velocity.…

A: Given : m = 35 kg h = 10 m t = 12 seconds

Q: A spring has a natural length of 24.0 cm. If a 27.0-N force is required to keep it stretched to a…

A: According to question we need to find--- work done?

Q: A car weighing 1.2 tons. Its engine generates power Its value is 2000 newtons. Serious hurry The Car…

A: We have from Newton's second law of motion ,F=ma , where F is force , m is mass and a is…

Q: What force is required to do 3500 J of work over a distance of 80 m? Select one: O 43.75 N O 500 N O…

A: solution as

Q: Ahmed (52 kg) was riding his bike (11 kg) at 3.5 m/s when he noticed he was late. He speeds up to…

A:

Q: 64. When released, a 100-g block slides down the path shown below, reaching the bottom with a speed…

A: It is given that, m=100 gvf=4 m/s

Q: How much work can a 120 W motor do in 3.0 seconds? (120 W is the power of the motor.) O 0.025 J O…

A: Let the power of the motor is denoted by P and time is denoted by t.