Questions LLC
Login
or
Sign Up
Ask a New Question
Energy and Work
Page 5
Questions (241)
3- A 5.0 Kg block is released from point A in the figure below. It travels along the smooth surface A E except for the part
1 answer
asked by
Maryam
488 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
497 views
A 2.0 x 103 kg car is pulled 345 m up a hill that make s an angle of 15° with the horizontal. What is the potential energy of
2 answers
asked by
James
515 views
5. Darth Vader unleashed the power of the DARK SIDE (1225 watts) on the unsuspecting Jedi.If he did 727 joules of work how much
2 answers
asked by
Essence Forbes
497 views
A car (mass = 860 kg) is at rest on the top of a tall hill. the car rolls down the hill and at the bottom, reaches a top speed
1 answer
asked by
Mechai
489 views
QUESTION:
A 200 N/m, 5 m spring on a 20 degree incline is compressed 2.3 m and a 5 kg block is placed on it. If we neglect
1 answer
asked by
Phil
504 views
A car with a mass of 890 kg travels at a speed of 20.0 m/s. Seeing that the road ahead is blocked by a rock slide, the driver
1 answer
asked by
Anonymous
481 views
(a) calculate the number of kilocalories needed to climb 232 stair steps (116 steps per minute for 2 min.)
*climbing stairs
1 answer
asked by
sara
477 views
A 82.5-kg climber is scaling the vertical wall of a mountain. His safety rope is made of a material that, when stretched,
1 answer
asked by
Michelle
461 views
A reaction at 3.24 atm consumes 5.10 L of a gas adiabatically (q = 0). Calculate the change in internal energy of the system (in
1 answer
asked by
JUNDY
452 views
A 2.20 kg box slides down a rough incline plane from a height h of 1.39 m. The box had a speed of 2.77 m/s at the top and a
1 answer
asked by
help
465 views
A spring is attached to the top of a table. The spring has a spring constant of 500.0 N/m. The spring is initially compressed by
1 answer
asked by
453 views
How high must a 2.0-kg basketball be thrown so that the top of its arc, it has a potential energy of 160 J?
1 answer
asked by
royce calvin
436 views
A 64.2-kg skateboarder starts out with a speed of 2.21 m/s. He does 98.0 J of work on himself by pushing with his feet against
1 answer
asked by
Cameron
443 views
A spring with a force constant of 1625 N/m is compressed 12.1 cm. Find the work done by the force compressing the spring.
3 answers
asked by
Brady Kershner-Hanna
433 views
A 22.1 kg child descends a slide 3.4 m high and reaches the bottom with a speed of 2.4 m/s. How much thermal energy due to
1 answer
asked by
Anonymous
440 views
Can you explain to me what happens to the energy when you do work?
thanks
3 answers
asked by
mei
428 views
The potential energy (in J) of a system in one dimension is given by:2 3 U(x) = 5 − x + 3x − 2xWhat is the work done in
1 answer
asked by
freddy
447 views
Hello so my question is an 85kg kangaroo acquires 2.2kJ of energy in jumping straight up and down from rest. How high does the
1 answer
asked by
Amy
435 views
how far will 490 Joules raise a block weighing 7 newtons
1 answer
asked anonymously
38 views
A 59.1 N/m spring is unstretched next to the 90 degree angle of an incline, and the system is released from rest. The mass of
1 answer
asked by
Jack Johnson
450 views
Describe a situation where you have applied a lot of force (and maybe even felt tired afterward) but did no work in the sense
1 answer
asked anonymously
20 views
Lenore is on an inclined plane next to her truck. Holding her hands steady, she pushes a box up the plane and into her truck.
1 answer
asked anonymously
24 views
What happens when you use a lever to lift a box?(1 point)
Responses The lever reduces the amount of mechanical energy stored in
1 answer
asked by
u dont know me
11 views
Choose all statements that are true.
Energy can be destroyed. Force is the same as speed. Work is only done if an object is moved
1 answer
asked anonymously
20 views
A 70kg bicyclist, initially at rest at the top of a hill, coasts down the hill. During her ride she experiences a 40N drag. The
1 answer
asked anonymously
20 views
If the 0.4 kg spring were used to launch the toy horizontally across a felt rug, with a coefficient of kinetic friction being
1 answer
asked anonymously
22 views
What is the efficiency of a ramp if 2,000 joules of energy results in 1,200 joules of work?(1 point)
Responses 80% 80% 24% 24%
1 answer
asked by
Destinee
20 views
All things need energy
1 answer
asked anonymously
7 views
You carry a bag of dog food up a flight of stairs. How much Work is done if you lift with a power of 500 Joules per second for
1 answer
asked by
b
15 views
You do 2,400 Joules of work in 60 seconds. Calculate your power.
1 answer
asked by
b
12 views
A 0.10 meter spring is stretched from equilibrium to position A at 0.15 meters and then to Position B at 0.20 meters. Compared
1 answer
asked anonymously
10 views
which of the following is an effect that could be included in the chart provided? oil is used as fuel for machinery
1 answer
asked anonymously
12 views
What is the equation for Efficiency?
Efficiency =
1 answer
asked by
.,.
16 views
Calculate the efficiency of a machine that produces 800J of work for every 2000J of work placed into the machine, and show your
1 answer
asked by
.,.
33 views
Write the mathematical form of the work energy theorem
1 answer
asked anonymously
8 views
Question
Use the table to answer the question. Machine Output Work (J) Input Work (J) A 750 1,500 B 1,000 4,000 C 450 600 D 3,000
1 answer
asked anonymously
15 views
What is the efficiency of a ramp if 2,000 joules of energy results in 1,200 joules of work?(1 point)
Responses 24% 24% 80% 80%
1 answer
asked anonymously
7 views
If you were trying to describe the difference between power and work you could say:
Group of answer choices To find power we need
1 answer
asked by
Ilikecookies2009
12 views
If you are given force and distance, you can determine power if you know
Group of answer choices joules time watts energy
7 answers
asked by
Ilikecookies2009
7 views
What is the efficiency of a ramp if 2,000 joules of energy results in 1,200 joules of work?(1 point)
Responses 60% 60% 24% 24%
1 answer
asked anonymously
4 views
Pages
1
2
3
4
5
Parent Categories (12)
Dynamics
Electromagnetism
Forces and Motion
Kinematics
Kinetics
Mathematics
Mechanics
Physics
Physics/Newtonian Mechanics
Physics/Science
Science
Thermodynamics