Question 15) An elevator motor is moving an empty elevator upwards at a speed of 5.0 mis, as shown below. The power input to the motor is 4.0 kW. The motor is 7U 5 efficient
Q: car is moving towards a ramp at a speed of 9.0m/s, as shown below. The length of the ramp (not the…
A: speed of car (u) = 9 msLength of ramp (L) = 12 m efficiency (e) = 71% θ = 12o
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Q: A machine gun fires 360 bullets per minute. Each bullet has a mass of 5 grams and travels at 600…
A: Given: A machine gun fires 360 bullets per minute. mass each bullet of 5 grams v = 600 m/s To…
Q: PHYS-91; Multiple Choice: A 10,000-watt motor operates an elevator weighing 5000 newtons. Assuming…
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Q: a 65kg cyclist on a 15kg bicycle starts from rest and increases his speed to 12m/s in 20s a) what…
A: The objective of the question is to calculate the power output of the cyclist and the efficiency of…
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Q: 1 kWh- 1000 j/sec 1 kWh - 3400 BTUS 1. 3000 watts =3 kW %3D 2. 50,000KW = 3. 4.5 x 10^ 6 watts = 4.…
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Q: A sled of a mass 30.0 kg is given a kick on a frozen pond,imparting to it an initial speed v…
A: Given Data: The mass is, m = 30.0 kg. The initial speed is, u = 4.0 m/s. The coefficient of kinetic…
Q: Estimate the kinetic energy of a 90,000-ton aircraft carrier moving at a speed of at 30 knots. You…
A: It is given that,
Q: A crane lifts a load of mass m = 500 kg vertically at constant speed v = 2 ms-'. Find the power…
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Q: 7. A motor and cable apparatus lowers an elevator that is initially moving downward until the…
A: Given:An elevator moving downward with an initial velocity of vo from the height y.
Q: Question: If you hold a heavy weight over your head, the work you do •Is greater than zero. •Is…
A: work is nothing but the product of the applied force and the displacement in the direction of…
Q: To make a batch of cookies, you mix half a bag of chocolate chips into a bowl of cookie dough,…
A: Here's the information that we need to use: FF is the applied force vv is the speed ΔtΔt is the…
Q: How much work W is done by each horse in a time t? How much power P does each horse provide?
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Q: ) A crane used to lift a 975 kg bucket of concrete operates at an efficiency of 29.8%. If the…
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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: Which do you think requires more power: moving up stairs at a slow speed (ex: walking) or moving up…
A: Let’s get this out of the way first: energy is a scalar quantity an its units are joules.…
Q: Question 9) During a board game called Rat Trap0, mechanical contraptions are activated in a…
A: The given values are, m=50.0 g=0.05 kgEloss=2.0 Jhi=17 cm=0.17 mhf=4.0 cm=0.04 mvf=13 m/s
Q: In a building, building materials are raised using an electric motor with a power consumption of…
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Q: A 5.00-kg crate is sitting on the ground at rest. An electric motor with an efficiency of 0.20 (20%)…
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Q: The car is driving on the highway at a speed of 108 km/h. Air resistance force is 0.40 kN. How much…
A: Here given a car is driving with a speed 108km/h. Air resistance is .40kN. We have to calculate the…
Q: It takes a minimum distance of 98.26 m to stop a car moving at 17.0 m/s by applying the brakes…
A: Given ; case -1 minimum stopping distance s=98.26m, initial velocity of car u=17.0 m/s final…
Q: Questions 1. To increase his speed from 20 km/h to 30 km/h, the cyclist must produce an additional…
A: Power is defined as the energy transferred to system per unit time.
Q: Problem 2. Power A 3.00 x 102 Watts electric wheelchair and its occupant has a combined mass of 175…
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Q: A 30.6 kg child starts from rest at the top and slides down a slide that is 1.68m high. At the…
A: Mass(m) =30 kg Height(h) =1.68m Speed at bottom (vf)=2.29 m/s Speed at top (vi)=0 m/s His…
Q: In the figure, the vehicle has a mass of 2000 kg, and is traveling at a speed of v = 50 m/s. If the…
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Q: A person in good physical condition can put out 100 W of useful power for several hours at a…
A: We know that one people produces an output of 100 W so the number of people that can produce 5 kW of…
Q: 18. What is the average power developed by a motor as it lifts a 400.-kilogram mass at a constant…
A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…
Q: Two identical golf carts move at different speeds. The faster cart has twice the speed and therefore…
A: Kinetic energy is the energy possess by an object due to its motion. K = (1/2)mv2 K is proportional…
Q: A car of mass 500kg moves along a straight level road. The engine of the car works at a constant…
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Q: Your 1500Kg car is behind a truck travelling at 60 mph. To pass it, you speed up to 75mph in 6s.…
A: P=Ef-Eit =0.5mv2f-v2it
Q: A car is moving along a road at 25.0 m/s with an engine that exerts a force of 2,475.0 N on the car…
A: Velocity of car,v=25 m/sForce exerted,F=2475 N
Q: In figure (5), if the 50 kg load A is hoisted by motor M so that the load has a constant velocity of…
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Q: Engine #1 produces twice the 1) yes power of engine #2. Can we 2) no conclude that engine #1 does…
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Q: Question 18) A box is lifted vertically 1.5 m and is then held there. The box has a weight of 100 N.…
A: solution Work is done in holding the box in this position B:w=?
Q: In unloading grain from the hold of a ship, an elevator lifts the grain through a distance of 12 m.…
A: Given,height of the elevator, h = 12 mgrain is discharged at the top of the elevator at a rate of,…
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