1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
34kurt
3 years ago
7

Use the law of conservation of energy to explain why the work output of a machine can never exceed the work input

Physics
2 answers:
Veronika [31]3 years ago
7 0

The law of conservation of energy states that energy is not created nor destroyed, rather it is only transferred or transmitted from one form to another. Now, the work exerted which is the input is only transformed to move the object which is now becomes the output work. Some are used to move the object, some are converted to other forms. That is why it is never greater than the input energy. Thank you for your question. Please don't hesitate to ask in Brainly your queries. 
abruzzese [7]3 years ago
4 0

Answer:

Explanation:

According to the law of energy conservation- energy of a closed system can neither be created nor be destroyed it can be only transformed. In a machine we get supply of input which get converted into different forms, we can not create any additional energy as input so it is possible that all the input energy converts into output( extreme case, when losses are zero) otherwise input energy coverts into many other form(heat, friction,etc) in the process of generating output. So output of a machine can never exceeds the input.

You might be interested in
For all values of x, y, and z, which expression is equivalent to 5xy. 5z?
vfiekz [6]

Answer:

25xyz

Explanation:

5 times 5 is 25xyz

7 0
3 years ago
Read 2 more answers
what happens to the strength of an electromagnet when the number of coils in the solenoid is decreased?
Papessa [141]

Answer: a . it decreases

Explanation:

6 0
3 years ago
Read 2 more answers
An object exhibits SHM with an angular frequency w = 4.0 s-1 and is released from its maximum displacement of A = 0.50 m at t =
vivado [14]

Explanation:

It is given that,

Angular frequency, \omega=4\ s^{-1}

Maximum displacement, A = 0.5 m at t = 0 s

We need to find the time at which it reaches its maximum speed. Firstly, we will find the maximum velocity of the object that is exhibiting SHM.

v_{max}=A\times \omega

v_{max}=0.5\times 4

v_{max}=2\ m/s............(1)

Acceleration of the object, a=\omega^2A

a=4^2\times 0.5

a=8\ m/s^2...............(2)

Using first equation of motion we can calculate the time taken to reach maximum speed.

v=u+at

t=\dfrac{v-u}{a}

t=\dfrac{2-0}{8}

t = 0.25 s

So, the object will take 0.25 seconds to reach its maximum speed. Hence, this is the required solution.

4 0
3 years ago
The lower the value of the coefficient of friction, the___ the resistance to sliding.
Nuetrik [128]

The lower the value of the coefficient of friction, the lower the resistance to sliding.

<u>Explanation:</u>

The coefficient of friction defines as directly proportionate with the resisting force, which is the frictional force. Hence, if there seems a decrease at coefficient of friction, then it is sure that the frictional force decreases.

We know that the frictional force on a body, is the product of coefficient of frictions and the normal forces acting on the body. Note that friction acts only, if a body is in contact, and it is of three types, static, kinetic and rolling.

4 0
3 years ago
Two bar magnets are labeled A and B. The ends of each magnet are numbered 1 or 2, but the poles are not labeled. When A1 is brou
olga2289 [7]

The conclusion that is best supported by the data is;

D) A1 and B1 are like poles, but there is not enough information to tell whether they are north poles or south poles.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Which circuits correctly show Ohm's law?
    12·2 answers
  • Honey bees beat their wings, making a buzzing sound at a frequency of 2.3 × 102 hertz. What is the period of a bee's wing beat?
    7·1 answer
  • A horizontal line on a distance-time graph means the object is
    6·2 answers
  • After a flood, people should guard against
    10·2 answers
  • What is the observed frequency of a siren with a frequency of
    10·1 answer
  • A dolphin's tops speed is 17 m/s. If a dolphin swam at this constant velocity for one hour
    7·1 answer
  • A man pulls a wagon with a handle that is at an angle of 42° with the ground. If the man pulls with 330 N of force, how much for
    9·2 answers
  • your stopped at a red light. You've checked the intersection to see that it is clear of vehicles and pedestrians, unless a tells
    7·1 answer
  • When acceleration and velocity are the in the same direction, the speed will​
    13·1 answer
  • Connecting many devices in a single socket does not affect the flow of current in a
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!