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3 years ago

Why is the amount of mechanical energy produced less than the amount of electrical energy used?

Physics

2 answers:

Tema [17]3 years ago

6 0

Because the efficiency of the process is less than 100%.

Hoochie [10]3 years ago

5 0

Because some of the energy is wasted and the amount of energy wasted is based on the efficiency of the machine

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A car takes off from rest takes of from rest and covers a distance of 80m on a straight road in 10s.Calculate the magnitude of i

hodyreva [135]

Initial velocity (u) = 0 m/s [the car was at rest]
Distance (s) = 80 m
Time (t) = 10 s
Let the magnitude of acceleration be a.
By using the equation of motion, $s = ut + \frac{1}{2} a {t}^{2}$ we get, $80 = 0 \times 10 + \frac{1}{2} \times a \times {10}^{2} \\ = > 80 = \frac{1}{2} \times 100a \\ = > 80 = 50a \\ = > a = \frac{80}{50} \\ = > a = 1.6$

Answer:

The magnitude of its acceleration is 1.6 m/s^2.

Hope you could get an idea from here.

Doubt clarification - use comment section.

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3 years ago

5. Which pair of words, in order, correctly completes

sattari [20]

Answer:

B is an answer.

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3 years ago

What are electromagnetic waves?

adelina 88 [10]

D: Sóng có thể truyền qua khoảng không của không gian,

với tốc độ ánh sáng.

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3 years ago

You push very hard on a heavy desk, trying to move it. You do work on the desk:

frozen [14]

Answer:

Explanation:

We know that work done is given by

$W=F.d=Fdcos\Theta$

So there are two case in which work done is zero

First case is that when force and displacement are perpendicular to each other

And other case is that when there is no displacement

So for work to be done there must have displacement, if there is no displacement then there is no work done

So option (c) will be the correct option

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3 years ago

How are primary and secondary succession similar and how are they different?

ExtremeBDS [4]

They are similar because they are all colors in the spectrum and they are different because you cant seperate primary colors but you can seperate secondary

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