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Power
Page 3
Questions (166)
a power = work/time question.
A broken car is being pushed to a garage. a) work out the drivers output if he takes 1 hour and 45
1 answer
asked by
jerry.
746 views
A 1.50 ✕ 103-kg car starts from rest and accelerates uniformly to 19.3 m/s in 11.7 s. Assume that air resistance remains
1 answer
asked by
Muriel
711 views
Rosie (mass 58 kg) pushes a box with a horizontal force of 120 N (26.976 lb) at a speed 25 m/min. What is Rosie’s power
2 answers
asked by
Dave
669 views
A large truck (m=3300kg) accelerates from 15 m/s. Neglecting any friction or air resistance, find the average mechanical power
3 answers
asked by
Stacy
639 views
A multicylinder gasoline engine in an airplane, operating at 2500 rev/min, takes in 7800 J of energy and exhausts 4600 J for
1 answer
asked by
Anonymous
641 views
A truck accelerates uniformly from rest to 21.5m/s in 5.7sec along a level stretch of road. Determine the average power required
2 answers
asked by
Christine
652 views
Can someone explain how to do this please?
A person who has a mass of 60kg run up a flight of stairs 12m high in 20 seconds, how
5 answers
asked by
Honey Rogue
636 views
A weightlifter raises a 90k-g barbell from the floor to a height of 2/2 m in 0.6 s. What was his average power output during his
3 answers
asked by
Aly
601 views
A rocket of 30000kg mass acquires a speed of 2000k after takeoff. The power expended during this time is in 1minute?
3 answers
asked by
poppy
550 views
How much power is developed by a jumbo jet that cruises at 250 m/s. When the trust of its engine is 100,000N?
2 answers
asked by
yena
563 views
define 1watt of power . a lamp consumes 1000J of electrical energy in 10s calculate its power.
2 answers
asked by
prudhvi
595 views
What is power output of a 60 kg person who walks up a 4 meter flight of stairs in 4.0 seconds?
3 answers
asked by
Anonymous
577 views
In 35s, Samsonite lifts his 8kg case from the floor to .8m above the ground (in his arms), carries it 24m across the room ( at
2 answers
asked by
Tiana
575 views
What power is needed to lift a 358 crate of bricks from the ground to the top of a 25.0 -high building in 1 minute?
2 answers
asked by
Amanda
555 views
An electric bulb is rated 220v-100w.the power consumed by it when operated on 110v will be
2 answers
asked by
Angrej
561 views
A woman pushes a lawn mower with a con-
stant force of 112 Newtons at an angle of 37� with respect to the horizontal. The lawn
2 answers
asked by
ally
564 views
how much power, in watts, is needed to cut a lawn in 50 min if the work ivolvled is 100,000 j
2 answers
asked by
sophie
541 views
a teacher does 140 J of work in 20 s. How much power did he use?
3 answers
asked by
sophie
517 views
A 5.o kg box is lifted to a height of 10 meters at a constant speed.
a)How much power is required to complete this task in 10
2 answers
asked by
Mexico
501 views
A 200-pound boy lifts a 40-kilogram box off of the floor 1.3 meters in 0.7 seconds. His brother lifts a 48-kilogram box off the
2 answers
asked by
Kayla
498 views
If an automobile engine delivers 46.0 hp of power, how much time will it take for the engine to do 5.30 x 10^5 J of work?
2 answers
asked by
jim
498 views
A 25.0 kg block is very slowly raised up a vertical
distance of 10.0 m by a rope attached to an electric motor in a time of 8.2
2 answers
asked by
Anonymous
494 views
Bob can throw a 540 g rock with a speed of 26 m/s. He moves his hand forward 0.8 m while doing so.
What is Bob's maximum power
1 answer
asked by
meg
483 views
An engine draws water from a depth of 10 m from earth at aspeed of 2m/s at arate of 10 kg/10 s. What is the power of the engine?
1 answer
asked by
ritu
480 views
A boy weigh 350 new ton runs up a flight of stairs consisting of 20 steps each 10cm high in ten seconds.what is his power
2 answers
asked by
Anonymous
481 views
how much power, in watts, is needed to cut a lawn in 50 min if the work ivolvled is 100,000 j
1 answer
asked by
julie
474 views
A car of mass accelerates from rest to a speed in time with negligible friction and air resistance. What is an expression for
1 answer
asked by
Jared
467 views
How much power is dissipated by each resistor in the figure below, in which V = 24 V and R2 = 15 ?
1 answer
asked by
ananomyus
440 views
The fireman can carry a lady stuck in a building down a 20m ladder in 20 seconds. He uses 160N of force. How much power was
1 answer
asked anonymously
25 views
A jet aircraft is traveling at 241 m/s in horizontal flight. The engine takes in air at a rate of 34.9 kg/s and burns fuel at a
1 answer
asked anonymously
25 views
Which word suggests the greatest power?
might strength energy
1 answer
asked by
Strawberry Cow
25 views
put the correct option into the blank areas
You do work on a cart loaded with groceries. If you do this work in one-third the
1 answer
asked anonymously
24 views
You do work on a cart loaded with groceries. If you do this work in one-third the usual time, you spend blank. This is an
1 answer
asked anonymously
20 views
A stonemason lifts boulder weighing 80 neutrons from the ground onto 1.50 meter wall in 2.0 seconds. what power does he develop,
1 answer
asked anonymously
15 views
How is power defined?
Responses the total distance an object is moved the total distance an object is moved the quantity of work
1 answer
asked anonymously
11 views
a forklift raises a crate in 5.0 seconds giving the crate 5000 joules of potential energy what is the power of the forklift
1 answer
asked anonymously
19 views
a forklift a crate in 5.0 seconds giving the crate 5000 joules of potential energy what is the power of the forklift if it does
1 answer
asked anonymously
18 views
the right to declare war is an example of what type of power?
A. reserved B. unitary C. enumerated D. concurrent
1 answer
asked by
lily
22 views
What is the ability to perform at maximum effort in as short of a period of time as possible
Question 6 options: Speed Endurance
1 answer
asked anonymously
19 views
True or false
All the given powers are power output values
1 answer
asked anonymously
12 views
Your motor bike breaks down 5 km from your home you use 400 N for the entire 60 minutes that it takes you to push this motorbike
1 answer
asked anonymously
19 views
How much power does it take to apply 20 Joules of work in 0.5 seconds?
1 answer
asked by
b
8 views
You use 60 J of energy to move an object for 4 seconds. What amount of Power did it take?
1 answer
asked by
b
8 views
A child does 30 Joules of work in 5 seconds. Calculate the child's power.
1 answer
asked by
b
8 views
An incredible amount of inspiration can be drawn from the power found in everyday.
A) phone calls B) moments C) brainstorms D)
1 answer
asked anonymously
10 views
If we have less power, we most likely have
more work done over the same amount of time the some amount of work being done over a
1 answer
asked anonymously
13 views
how to rule the world
1 answer
asked anonymously
10 views
how does magic as a power work?
simple answer
1 answer
asked by
ang3l.under.the.stars.(✿◡‿◡)
14 views
Power corrupts. Is it central idea or theme?
1 answer
asked anonymously
24 views
physics:power
1 answer
asked by
John
7 views
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