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3 years ago

Explain why machine can"t be 100% efficient practically?

Physics

2 answers:

inna [77]3 years ago

8 0

Retiro en la capital y se lo dijo que el gobierno no tiene la casa en el bus y el que no tiene que ver si no

Zigmanuir [339]3 years ago

5 0

Answer:

Heat

Explanation:

Heat is the main component in why everything is not 100% efficient. Heat is a byproduct of everything and cannot be avoided.

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The federal government spends the most on which of the following?

sveta [45]

As Figure A suggests, Social Security is the single largest mandatory spending item, taking up 38% or nearly $1,050 billion of the $2,736 billion total. The next largest expenditures are Medicare and Income Security, with the remaining amount going to Medicaid, Veterans Benefits, and other programs.

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2 years ago

The force of repulsion that two like charges exert on each other 5N. what will be if the distance between the charge is decrease

GalinKa [24]

The new force becomes One Ninth (1/9) of the original force.

The force between two point charges (let's say $\mathrm{Q} 1$ and $\mathrm{Q} 2$$ ) is given by the following formula:

Force $=k \times Q 1 \times Q 2$ divided by ( $r$ squared)

Here r is the distance.

If we multiply r by three then after squaring it will become $9 \times r$ squared.

Let's rewrite the formula and call it new Force:

New Force $=\mathrm{K} \times \mathrm{Q} 1 \times \mathrm{Q} 2$ divided by $(9 \times \mathrm{r}$ squared )

Now just separate the 9 :

New Force $=1 / 9(\mathrm{~K} \times \mathrm{Q} 1 \times \mathrm{Q} 2$ divided by $(\mathrm{r}$ Squared ))

New Force $=1 / 9$ (Force)

So turns out that the new force becomes One Ninth (1/9) of the original force.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to define force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Learn more about force brainly.com/question/13191643

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1 year ago

what branch of Science studies matter and energy and the way they work together with force to cause motion

algol13

The branch of science that studies this is physics

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3 years ago

An astronomy class is so excited by the discovery of planets around other stars that they decide to do a library exhibit on the

tekilochka [14]

Answer: e. Christian Dopplerâ

Explanation:

Based on the information given, the scientist of the past that should definitely be included in the exhibit is Christian Dopplera.

He described how the frequency of sound waves and light is being affected by the relative speed of both the source and also the observer. This was referred to as the Doppler effect.

In this scenario, the Doppler effect can be used to show how the universe is expanding. Therefore, the correct option is E.

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2 years ago

PLEASE HELP WILL GIVE BRAINLIEST FILE IS ATTACHED

Ainat [17]

Answer:

chemical, electrical

mechanical, electrical

heat, light

7 0

3 years ago

Explain why machine can"t be 100% efficient practically?​

Explain why machine can"t be 100% efficient practically?