he energy efficiency of electric vehicles is usually rated in terms of the​ kilowatt-hours (of​ energy) required to drive 100​ miles, or​ kWh/100 mi. An electric car is rated at 38 ​kWh/100 mi.   a. Is a vehicle rated 27 ​kWh/100 mi more or less efficient than this electric​ car? b. How much energy​ (in kilowatt-hours) is required to drive this electric car 260 miles? c. Assuming electricity costs ​$0.14​/kWh, how much does it cost to drive this electric car 350 ​miles?

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.…

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Q: This is a multi-part problem. Please answer all parts here. A 2 kg object is moving along the…

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Q: 6. A 0.150 kg baseball is moving 20.0 m/s. A bat hits it, doing 15.0 J of Work on it. What is the…

A: work energy theorem Wnet=change in kinetic energyWnet=∆KEWnet=KEfinal-KEinitialWnet=…

Q: 6. You notice that an object is moving from point A to point B. The object measures a kinetic energy…

A: Given data: The kinetic energy at A is KE=6.75 J. The speed at A is vA=4.25 m/s. The speed at B is…

Q: 4. A runner has 250 J of KE. A short time later, he has 150 J of KE. How much Work was done on him?

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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: Which statement about work is NOT true? OA. Work cannot be negative. B. Work is a scalar. OC. The…

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Q: You lift a 1 kg object from the floor to the top of a 1.5 m high table. 1. What is the force needed…

A: Given: The mass of the object is 1 kg. The dsiplacement of the object is 1.5 m from floor to top of…

Q: You (60kg) and a friend (75 kg) are each in a sled sitting at the top of a snowy hill. You waxed…

A: Given :      Mass of me ,m1 = 60 kg      Mass of a friend, m2 = 75 kg      Height of the hill, h = 8…

Q: 10. A person jumped into the ocean from a car which was 320 m above the water's surface. He had a…

A: Given: mass of person, m = 94 kg  Initial height of person, h1 = 320 m final height, h2 = 75 m

Q: A large hoist is lifting a 2000 kg automobile. There is a gauge on the hoist that displays its power…

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Q: 1. How much work would a 60.0 kg person do in climbing from the surface of the Earth to the top of a…

A: We are given weight of person. We are also given the height of mountain. The work done is the…

Q: A 4 watt robot motor is being fitted to a 3 kg robot. The motor runs for 10 seconds. How fast will…

A: Given: Power given to robot motor P = 4 watt Mass of the robot m = 3 kg. Time taken by robot to move…

Q: A motorcycle at rest has 550 J of Work done on it. What is its final KE?

A: Given data:  Initial velocity (v0) = 0 m/s Work done (W) = 550 J Required: Final kinetic Energy

Q: By converting the power of loudspeaker,3700 000 Watt into kilowatt, we get

A: Power is defined as the ratio of work done and the unit time. It is generally represented by the…

Q: 1. A 6.2kg box is moving at 2.4m/s to the left. a) What is its kinetic energy? 2.4m/s 6.2kg b) How…

A: Given data:  Mass (m) = 6.2 kg Initial velocity (u) = 2.4 m/s Work done by the friction (W) = -4 J…

Q: A 0.60 kg rubber ball is thrown into the air. At a height of 30 m above the ground, it is travelling…

A: Given: Mass,m=0.60kgAcceleration due to gravity,g=9.8m/s2Height,h=30mVelocity,v=18m/s An object's…

Q: 2. A 59 kg person climbs up the stairs with a height of 5.5 m. a.How much work does the person do?…

A: Given , Mass of person( m) = 59 kg Height climbed by person (h)= 5.5 m

Q: You are using a rope to lift a 14.5 kgkg crate of fruit. Initially you are lifting the crate at…

A: given:-      mass of crate of fruit = 14.5 kg    Initial velocity of crate (u) = 0.500 m/s  Tension…

Q: You push a 10kg box across the floor. After it leaves your hand, it’s moving at 3m/s. a.What type…

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Q: use 4. A 12.0-kg mass is dropped from a hot air balloon at a height of 345 m above the ground. Find…

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Q: DIOO R 13 WILI stance of 6m down th How much work is What is the average

A: 8(A)Given values:- Mass of the block,(m)=5 kg ----(1) Speed of the block,(v)=6 m/sec ----(2) Height…

Q: Suppose you lift a 20 kg box by a height of 1.0 m.a. How much work do you do in lifting the box?…

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Q: A radio-controlled car powered by an electric motor accelerates from rest to 0.600 m/s in 22.0 ms.…

A: Solution:   Given Values, Initial Velocity (u) =0 m/s (since, it starts from rest)Final Velocity (v)…

Q: Sheryl is driving along the highway in an 894 kg car. She initially drives at a velocity of 50 m/s.…

A: Given:-  The mass of the car is m = 894 kg  The initial velocity of the car is vi= 50 m/s  The…

Q: A. Suppose you lift a 15 kg box by a height of 1.0 m. How much work do you do in lifting the box?…

A: (a) The work done in lifting the box is

Q: Answer the following questions: a. If you push a lawn mower across a yard in 10 seconds, how does…

A: a. If you push a lawn mower across a yard in 10 seconds, how does the work done compare with pushing…

Q: The total energy of an object at rest 10 m above the ground on a building is 200 J. The object is…

A: Given , Total energy at 10m above the ground = 200 J Height ,h = 10m acceleration due to gravity, g…

Q: 3 meters above the base.

A:

Q: A 70-kg hiker hikes from an elevation of 1,209 m to an elevation 2,199 m. i. What is the hiker’s…

A: i) As the hiker moves from a lower elevation to a higher one the gravitational potential energy of…

Q: A 1.8 book has been dropped from the top of the football stadium. Its speed is 4.8m/s when it is 2.9…

A: Energy of system is always conserved. It just changes its form. When only considered the kinematics,…

Q: A block is moving with 52.0 J of KE. A 12.0 N force pulls the block straight back, against the…

A: Given data: Initial Kinetic Energy (KEi) = 52.0 J Force (F) = 12.0 N, straight backward Displacement…

Q: A block is at rest. A 40.0 N force directed 38.0° above horizontal pulls the block 8.00 m across…

A: Given data: Initial velocity (v0) = 0 m/s Force (F) = 40.0 N Angle (θ) = 38.0° Displacement (d) =…

Q: A hollow block of mass 3 kg is lifted to a height of 10 m in 3 minutes. a. What is the work done in…

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Q: 2. An electric drive features a 24 kWh battery pack and has a range of 170 km at a constant speed of…

A: We will answer the question by using expression relating power and energy. The details are as…

Q: What are informed about a particular force: "the force is inversely proportional to the cube of the…

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Q: A set of stadium stairs consist of 90, 20 cm high steps. A 70 kg runner is training by traversing up…

A: As per bartleby guideline for more than one subparts asked only first three are to be answered…

Q: Q1. a. Distinguish between homogeneous and non-homogeneous equation. b.Find the work done in…

A: A. A non-homogeneous system of equations is a system in which the vector of constants on the…

Q: . What type of energy does he have at the top of the hill? b. What is his potential energy?  c.…

A: The basic concepts used to solve this question are   The kinetic energy of an object is the energy…

Q: 8). For exercise, an 80 kg athlete climbs 20-m high stairs in 25 s. Assume the efficiency of the…

A: So in this question we are asked to calculate the metabolic energy of the athlete,  the change in…

Q: man pulls a 25 kg box in a horizontal fashion with 60N of force over a surface with us = 0.15 nd μk…

A:

Q: 1. Refer to figure 1. The 10.0 kg green cart travels down a ramp - from point A to B. Calculate its…

A: At point A, the cart has only potential energy.

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.