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sasho [114]
3 years ago
13

Is there any machine that is 100% efficient? why?why not

Physics
1 answer:
denis-greek [22]3 years ago
7 0

Answer:

No, it's not there.

Explanation:

For a machine to be 100% efficient, it has to be with an output which is equal to its input. But machines have an out put less than an input, hence efficiency below 100%.

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I need help like right now!!!!! please
Mariana [72]

1. All of the above

2. Lack of consistent sunlight

3. Nonpolluting & Can be developed anywhere

4. Protons and Neutrons

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Also I'm pretty sure all the answers I provided are correct but I'm not sure 4 a fact so plz let me know...

5 0
3 years ago
How are pendulums used in society? Give an example of a real-world pendulum that transfers a lot of energy.
mart [117]

Answer:

An old clock that has a swinging pendulum

Explanation:

7 0
3 years ago
The weight of a block on the inclined plane is 500 N and the angle of incline is 30 degrees. What is the magnitude of the force
yanalaym [24]

Answer:

250 N

433 N

Explanation:

N = Normal force by the surface of the inclined plane

W = Weight of the block = 500 N

f = static frictional force acting on the block

Parallel to incline, force equation is given as

f = W Sin30

f = (500) Sin30

f = 250 N

Perpendicular to incline force equation is given  

N = W Cos30

N = (500) Cos30

N = 433 N

3 0
3 years ago
State the Pascal's principle <br>​
krok68 [10]

Answer:

Pascal's principle, also called Pascal's law, in fluid (gas or liquid) mechanics, statement that, in a fluid at rest in a closed container, a pressure change in one part is transmitted without loss to every portion of the fluid and to the walls of the container

8 0
3 years ago
A 1500 kg car is parked at the top of a hill 5.2 m high. At the bottom of the hill, what is the kinetic energy, in Joules, of th
irga5000 [103]

Answer:

10.1

Explanation:

I think it's right?

4 0
3 years ago
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