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lukranit [14]
3 years ago
14

In your own words explain efficiency

Physics
2 answers:
Oliga [24]3 years ago
7 0
Efficiency is completing a task as fast a possible the the least amount of effort.
kaheart [24]3 years ago
6 0
It is what makes things efficent
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a waterwheel built in Hamah, Syria, has a radius of 20 m . If the tangential velocity at the wheels edge is 7.85 m/s , what is t
gtnhenbr [62]

Answer:

3.08m/s²

Explanation:

Given parameters:

Radius = 20m

Tangential velocity  = 7.85m/s

Unknown:

Centripetal acceleration  = ?

Solution:

Centripetal acceleration is the acceleration of a body along a circular path.

 it is mathematically given as;

       a  = \frac{v^{2} }{r}  

v is the tangential velocity

r is the radius

      a  = \frac{7.85^{2} }{20}   = 3.08m/s²

4 0
2 years ago
A material the resists the flow of electrons is called a
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An insulator which is also called a 'dielectric'.
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3 years ago
Why do bones weaken as a person gets older
Sonbull [250]

Answer:

The bones aren't as strong as a younger person, because an older person, ages due to time and it also depend on what they do in their past.

Does this help? ^-^"

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2 years ago
Which statements about Earth’s core help explain Earth’s magnetic field? Check all that apply.
Stella [2.4K]

All the statements can be used to explain about Earth's magnetic field.

Earth's magnetic field is almost same to that of the bar magnet. The magnetic field of the earth occurs from its core. It has an inner core which is solid in nature. in the outer core, there is a motion of the liquid due to heat flow from the inner core to the core mantle boundary which proves that the outer core is liquid and moving. The Earth's core consists of iron and nickel as the Eddy currents in the iron and nickel liquid helps generating the Earth's magnetic field.

Hence, all the three statements are true and can be used to explain the Earth's magnetic field.

5 0
3 years ago
Read 2 more answers
The theoretical line perpindicular to the surface where a light ray hits a mirror is called the
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That's called the "normal" to the surface at that point.
3 0
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