A machine puts out 100 watts of power for every 1000 watts put into it. The efficiency of the machine is 50%. 90%. 10%. 110%. none of the above

Answers

Answer 1

Answer:

Explanation: 10%


Related Questions

Hello people ~
When a comb rubbed with dry hair attracts pieces of paper. This is because the______

(a) comb polarizes the piece of paper

(b)comb induces a net dipole moment opposite to the direction of field

(c)electric field due to the comb is uniform

(d) comb induces a net dipole moment perpendicular to the direction of field​

Answers

[tex]\bold{Heya!}[/tex]

Answer :-

(b) comb induces a net dipole moment opposite to the direction of field.

Explanation :-

When a comb rubbed with dry hair it's attracts pieces of piece of paper. This is because the comb that induces of the dipole net that of the moment thatopposite of the field. And, This happens the field dueing to charge of the comb induces of the dipole moment in the paper of the molecules in the dielectric.

Hopefully This Helps ! ~

#LearnWithBrainly

[tex]\underline{Answer :}[/tex]

Jaceysan ~

Answer:

Option B

Explanation:

When a comb is rubbed with dry hair it induces some charge or its get charged either positive or negative

As paper remains in neutral hence it attracts the paper

Hence option B is correct

Why is solar energy a viable alternative energy source

Answers

Solar energy is a renewable energy resource that can provide suitable power for the world in general. It is one of the most abundant energy resources on Earth. Amongst the reasons why solar energy is a viable alternative energy are:

Solar Energy as an alternative source of energy

It is a free energy source

The sun is the largest source of free energy you can utilize on this planet. It can provide enough power that can supply the world’s electricity needs for a year.

It’s Good for the Environment

One of the primary benefits of utilizing solar energy is that it can provide a clean, green source of power. It is a self-sufficient renewable energy source.

Therefore, solar energy is a viable alternative energy source because it is a renewable source of energy.

Read more on Solar energy:

https://brainly.com/question/17711999

Answer:

It has an endless supply

Explanation:

Pearson Connexus 2023.

Unlike a nonrenewable source of energy such as fossil fuels, solar power is a renewable source of energy that will not run out.

What fraction of chlorine-36 remains UN-decayed after 800,000 years?

Answers

Three quarters remain un-decayed

closed circuit
open circuit
positive end
lightbulb
battery
negative end
battery
lightbulb
break
direction of current
View the images of and open and closed circuit.
a. Explain why the light bulb goes out in the second image. Use the term electron in
your answer.
b. Give an example of a way that we can control the flow of electricity in circuits
around the home.

Answers

A. the light bulb goes out once the circuit is open since it causes the flow of electricity to cut off. the light bulb dosent get the energy it needs to light up

Explanation:

B. a simple example of this in our every day life is a light switch. when you switch the light on then the circuit is closed and the energy transfers to the light bulb, when u switch the light off then you cut off the lights source of energy which causes the light to turn off.

i need help please!!​

Answers

Answer:

on the axis ties and greph

Community psychologists are not
concerned with worker stress factors.
True
False

Answers

it would be false as your answer

what is the gpe of the ball at position a (20-m high)

Answers

Answer:

Explanation:

P.E. = mgh = 7.7 * 9.81 * 20   j

Is it possible for a person to have zero mechanical energy?

Answers

Answer:

no

Explanation:

1. ….. has no definite shape or size
A. Solid
B. Liquid
C. Gas
D. Plasma

2. Distance traveled per unit of time is..
A. Velocity
B. Speed
C. Motion
D. Acceleration

3. The SI unit of pressure is the..
A. Pascal
B. Atmosphere
C. Torr
D. Bar
( please help me)

Answers

Answer:

See below ↓↓↓

Explanation:

1. C. Gas

Gases are classified as a state of matter which has no definite shape or sizeLiquids are commonly confused with gases in this manner, but remember liquids take the definite shape of the container if poured in, gases are not so

2. B. Speed

As the term "distance" is given, it is definitely speedOn the other hand, if "displacement" was given, then it would be velocity

3. A. Pascal

All of the options are units of pressureBut, the SI unit is actually N/m², which otherwise commonly called Pascal

PLEAASEEEE HELPP ASSPPP SHORT RESPONSE WILL GIVE BRAINLY

Australia's skin cancer rate is so high. The Australian Health Alliance has asked you to write a short argument that explains this to the Australian public. Remember to
explain how your evidence supports your claim to make your argument as complete and convincing as possible. You can agree with one or both of the claims.

Question: Why is Australia's skin cancer rate so high?

Claim 2: There is something different about the sunlight in Australia.

Claim 3: More people in Australia have skin that is easily damaged by sunlight.

Answers

Answer:

Claim 2

Explanation:

Australia's skin cancer rate is so high because of the climate and the weather in their area. It is also because since australia is on the bottom of the globe, the continent recieves higher UV radiation.

Thanks for the brainliest!

1.Australia has one of the highest rates of skin cancer in the world. This is due largely to our climate, the fact that many of us have fair skin that isn't really suited to such harsh conditions, our proximity to the equator (high UV levels) and our social attitudes and love for the outdoors.

2.Australia's unusually harsh sunshine results mainly from its location in the Southern Hemisphere. The elliptical orbit of the Earth places the Southern Hemisphere closer to the sun during its summer months than the Northern Hemisphere during its summer.

3.Basically, through migration, our two countries have been populated by many people with fair skin whose ancestors come from much less sunny climates. Lack of protective pigmentation leaves skin cells especially vulnerable to the DNA-damaging rays from the sun.20 Mar 2018

What do ethical guidelines for research with human subjects mean in psychology?

Answers

Explanation:

Research in humans should be based on from library and animal experimentation . Research protocols should be reviewed by an independent committee prior to initiation

A hiker climbs a hill 300m high. If she has a mass of 51kg, calculate the work she does in lifting her body to the top of the hill​

Answers

Answer:

153000J

Explanation:

[tex]work \: done = \: force \times distance \\ force = mass \times acceleration \: due \: to \: gravity \\ = 51 \times 10 \\ = 510newton \\ work \: done = 510 \times 300 \\ = 153000joules[/tex]

What are nonrenewable resources?

They are natural resources that are in limited supply and can easily run out.

They are natural resources that are in abundant supply or that can replenish themselves.

They are abundant natural resources that humans do not have to recycle or reuse.

They are artificial resources that humans use but are not able to be recycled or reused

Answers

Answer:

No. 1 is the correct answer.

Explanation:

The natural resources which deplets after long and continious use and are unable to be recreated/ takes a lot of time to renew are non renewable resources


what is the mass of 2.4 moles of water ​

Answers

Answer:

43.2

2.4×18

18 is the molar mass of water

multiply the no of moles with the molar mass to find the mass of the substance

Answer:

43.25 grams

Explanation:

one mole of H2O is 18.02 grams

18.02*2.4=43.248 grams

Use the passage to answer the question.

Light travels from the stars to Earth. As light travels, it moves through the empty vacuum of space. This is not something that waves do, because they need a medium to travel through, while particles do not. This shows that the particle model is best for explaining this phenomenon.

What is the reasoning in this passage?

(1 point)

Light travels from the stars to Earth.

As light travels, it moves through the empty vacuum of space.

This shows that the particle model is best for explaining this phenomenon.

This is not something that waves do because they need a medium to travel through, while particles do not.

Answers

This is not something that waves do because they need a medium to travel through, while particles do not.

How light travels in space?

A light travels without any medium while on the other hand, a medium is required for sound waves to move from oe place to another. Sound is a mechanical wave that cannot travel through a vacuum.

So we can conclude that electromagnetic waves like light do not require medium for its propagation.

Learn more about light here: https://brainly.com/question/19697218

Question #3:

A sample of helium behaves as an ideal gas as it is heated at constant pressure from 293 K to 363 K. If 70 J of work is done by the gas during this process, what is the mass of the helium sample? The universal gas constant is 8.31451 J/mol · K. Answer in units of g.

Answers

For a sample of helium behaves as an ideal gas as it is heated at constant pressure from 293 K to 363 K, the mass of the helium sample  is mathematically given as

n= 0.0986 g

What is the mass of the helium sample?

Generally, the equation for the ideal gas  is mathematically given as

PV=nRT

Therefore

W = P*(V2-V1)

W=nR(T2- T1)

n = W / (R*(T2 - T1) )

n= 4g/mol ∙ 16 J / (8.3145J/molK ∙ (351K - 273K) )

n= 0.0986 g

In conclusion, the mass of the helium sample

n= 0.0986 g

Read more about mass

https://brainly.com/question/15959704

When the weight moves, it has kinetic energy. Is this energy the result of a transfer or a transformation of energy from the spring? A transfer of energy means that the energy does not change form but is shifted from one object to another.

Answers

Answer:

I believe the answer is transformation

Explanation:

When 20. joules of work are done in 4.0 seconds; what is the power developed?

A. 0.20 watt

B. 5.0 watts

C. 16 watts

D. 80. watts

Answers

to find:

the power developed when, 20 joules of work are done in 4.0 second.

solution:

power= workdone/ time

here workdone= 20 joules

time taken= 4.0s

so putting these values in the above formula, we get:

power= 20/4.0

=5.0 watts

answer= option b) 5.0 watts

[tex]\bold\blue{Formula : }[/tex]

[tex]\bold{Power = \frac{energy}{time} }[/tex]

[tex]\bold\blue{Given : }[/tex]

Joules of work = 20

work are done = 4.0 seconds

[tex]\bold\blue{ Solution : }[/tex]

[tex]\bold{Power = \frac{energy}{time} }[/tex]

[tex]\bold{Power = \frac{20}{4.0} }[/tex]

[tex] \bold{ Power = 5.0}[/tex]

So , B.) 5.0 watts is answer .

Which famous astronomer discovered jupiter’s largest moons?.

Answers

Answer:

Galileo Galilei

Explanation:

The famous astronomer Galileo Galilei was the one who discovered Jupiter’s large moons.


I hope it helps! Have a great day!

Muffin ^^

Answer:

Galileo Galilei

Explanation:

The great and famous astronomer Galileo Galilei was the one that discovered Jupiter’s largest moons.


I hope it helps! Have a great day!

Anygays-

Which terrestrial world has the most atmospheric gas?.

Answers

Answer:

Venus

Explanation:

It has the most atmospheric gas, and it’s made up of 96% of Carbon Dioxide and around 3.5% of molecular nitrogen.


I hope it helps! Have a great day!

Anygays-

A perfectly spherical orange is split into four equal sections. if the radius of the orange is 4 centimeters, what is the total surface area of one slice? 16π cm2 32π cm2 24π cm2 64π cm2

Answers

The total surface area of one slice will be 64 π cm².

What is the total surface area?

The total surface area includes the base as well as the curving component. It is the whole area covered by the object's surface.

The total area of a form with a curved surface and base is equal to the sum of the two areas.

The total surface area of the sphere will be;

[tex]\rm A=4 \pi r^2 \\\\ \rm A=4 \times \pi (4)^2 \\\\ \rm A=64 \pi \ cm^2[/tex]

Hence the total surface area of one slice will be 64 π cm².

To learn more about the total surface area refer to the link;

https://brainly.com/question/8419462

Answer:

32

Explanation:

Photophores help the animals which zone of the ocean? how do they help?.

Answers

Special light-producing organs called photophores line its belly, helping the fish blend in with light-speckled water and confuse predators that might attack from below.

what is one watt power?

Answers

Answer:

1-watt power is defined as the power produced when 1 Joule of work is done for 1 second.

Explanation:

Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Have a wonderful day!

Answer:

In terms of electromagnetism, one watt is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potential difference of one volt (V), meaning the watt is equivalent to the volt-ampere (the latter unit, however, is used for a different quantity from the real power of an electrical circuit).

Explanation:

Hope it helps :)

Pls mark brainleist <3

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`

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Tori

Describe mathematically how two distinct waves each with wave functions like the one in eq. 2 – call them y1 and y2 – will combine. We call this interaction the principle of superposition.

Answers

The resultant wave of the different wave functions is = y1 + y2

Calculation of the resultant wave functions

The principle of superposition states that two waves moving through the same medium, the resultant value of the wave function is the sum of the different wave functions.

Waves superimpose by adding their disturbances,each disturbance corresponds to a force, and all the forces add.

Therefore, the resultant wave of the different wave functions is the addition of both wave functions which is = y1 + y2.

Learn more about waves here:

https://brainly.com/question/25847009

What are the differences between tidal power and hydroelectric power?


Thanks to anyone who helped

Answers

Answer:  With Hydroelectric power water is artificially stored in a high place, so it can be released and flow to a low place and through a generator. With Tidal energy the movement of water is also used to power a generator, but the flow of water is caused by the changing tides.

An electromagnetic wave moves through electric and magnetic fields. What is the relationship between the wave and the fields?

Answers

Answer:

the electric and magnetic fields that make up an electromagnetic wave are perpendicular (at right angles) to each other. Both fields are also perpendicular to the direction that the wave travels. Therefore, an electromagnetic wave is a transverse wave.

Explanation:

The electric and magnetic fields that make up electric magnetic waves are perpendicular (right angles) to each other both fields are perpendicular to the direction that the wave travels therefore an electric magnetic wave is a transverse wave

if their is no pivot can rular turn? explain?​

Answers

Answer:

No

Explanation:

Because there won't be any momentum

Answer:

No, because you need momentum and you won’t have any momentum there.

Explanation:

I apologize if it is incorrect-

I hope it helps! Have a great day!

Anygays-

Determine an expression for the coefficient of static friction in terms of m2 and m1.

Answers

Hey, I would like to help you, but do you have some more information like the full exercise? :)

Please help meeeeeeeeeeeeeeee

Answers

probabilityAnswer:

2/27

Explanation:

The elk can not be eaten so we remove that from the probablity

so we have x/18

songbird = 4/18

mice = 6/18

4/18*6/18 = 2/27

What happens when a mixture is separated
A) A substance is lost
B) A new substance is formed
C) The substances stay the same
D) The mass of the substances change

Answers

Answer:

the answer would be c

Explanation:

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