True of false efficiency compared the output work to the output force

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Answer 1
Answer: The statement about "efficiency compared the output work to the output force" is false. Efficiency can be compared from the input work to the output work.

Related Questions

As a tile falls from the roof of a building to the ground its momentum is conserved.
A student has a source of radiation that emits one of a, ß or y radiation. She places thesource opposite a Geiger-Müller tube and detector and records the count rate. She then places a sheet of paper between the source and the detector and records the count rate, and then repeats this with a sheet of aluminium instead of paper. Describe how her results will allow her to work out which type of radiation is emitted by the source. Please help :)
How would an electron shell model of an oxygen atom (O) appear after the atom has formed chemical bonds?
Atomic theory that states that atoms have three fundamental parts, and that electrons orbit the nucleus:
What are the Vedas?a) priests b) religious writings c) writings of the Buddha d) Hindu gods

Which of the following statements expresses what we mean by a scientific theory? A.) An educated guess.B.) A simple model that explains a wide variety of phenomena and that has survived repeated tests.
C.) An explanation for a physical phenomenon, an explanation that hasn't been tested yet.

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C. Because a theory isnt proven until theres facts to follow it up.

If you know the distance an object has traveled in a certain amount of time you can determine

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With that information, you can determine the object's speed.
Just divide the distance covered by the time to cover the distance.

If you also know the direction the object moved, then you can
determine its velocity.  If you don't, then you can't.
You can determine the velocity it is moving at. 

The diagram shows two bar magnets. They are cut along the dashed line, and then the two marked ends are placed near each other. Which statement best explains how the pieces will react?

A) The pieces will repel because the cut end of the top magnet is not a magnetic pole.

B) The pieces will attract because the cut end of the top magnet is not a magnetic pole.

C) The pieces will repel because the cut end of the top magnet is a south pole.

D) The pieces will attract because the cut end of the top magnet is a north pole.

Answers

The answer to this problem is "OPTION C" i.e. The pieces will repel because the cut end of the top magnet is a south pole.

A magnet as a collection of tiny magnets, called magnetic domains. Each of these domain reinforces the magnetic fields of the other domains and hence the net magnetic field of magnet is generated. Each one of these domains have a tiny north and south pole. If you cut a magnet in half (along the line suggested in the problem), the newly cut faces will become the new north or south poles of the divided parts.

Answer:

c

Explanation:

What factors could slow down a reaction time?

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Answer: To keep it basic start with temprature and inhibitors such as drugs that slow enzymes

surface area, temperature, concentration, and the presence of catalysts and inhibitors

Explanation:To slow down a reaction, you need to do the opposite. Factors that can affect rates of reactions include surface area, temperature, concentration, and the presence of catalysts and inhibitors. Temperature - Changing the temperature of a chemical reaction also affects the reaction rate.

Answer:

In driving, changes by fractions of a second in reaction time may mean the difference between a collision or the avoidance of one. On the road, distractions, speed, driving experience, and physical and cognitive fitness can seriously affect reaction times.

Explanation:

ig this

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study it? I tried the answer "b." and that's not the right answer I guess.a. The cosmological principle makes assumptions that provide scientific guidelines to enable its study.

b. Physicists develop mathematical equations to determine its physical nature.

c. The Big Bang theory provides the scientific guidelines to enable its study.

d. Scientists are able to gather samples from NASA.

Answers

Answer: a. The cosmological principle makes assumptions that provide scientific guidelines to enable its study.

Explanation:

Scientists cannot physically test their ideas about the origin of the universe but they use cosmological principles to study. Some aspects of the assumptions made on the basis of cosmological principle can be tested. Whatever was formed at the origin of the universe is present around us. Studies are made on them and conclusions are drawn.  

Cosmological principle states that on larger scale, the universe is homogeneous and isotropic. This means in which ever direction we look, its the same and there is no preference to any particular direction to make observations.

There are numerous theories associated with the origin of the universe but none can be proved. The theories can only be studied based on the assumptions made using the cosmological principle.

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study it?

a. The cosmological principle makes assumptions that provide scientific guidelines to enable its study.

Hope this helps.

A train whistle is at a higher pitch (note) as it approaches you and then drops to a lower pitch as it moves away. This effect is called?

Answers

the effect is called The doppler effect
The effect being mentioned is called "The doppler effect".