4 years ago

What is different about the different parts of the electromagnetic spectrum

1 answer:

4 0

Answer:

Each part of the spectrum has a different range of wavelengths (which correspond to frequency, color, and energy) at which you can find it.

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How does the law of conservation of energy apply to machines?

trasher [3.6K]

The answer is letter C

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How would you obtain a mean value for the specific heat<br> capacity of a material?

lidiya [134]

The heat capacity and the specific heat are related by C=cm or c=C/m. The mass m, specific heat c, change in temperature ΔT, and heat added (or subtracted) Q are related by the equation: Q=mcΔT. Values of specific heat are dependent on the properties and phase of a given substance.

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3 years ago

In lightning , light is seen first and sound is heard later it is due to

Maksim231197 [3]

Answer:

option 4

Explanation:

Light's velocity in air ( 3 × 10^8 m/s ) is much greater than sound's velocity in air ( 343 m/s )

Hence due to difference in velocities , during lightning light is seen first & sound is heard later

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3 years ago

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1. Na jaką wysokość wzniesie się piłka kopnięta pionowo w górę z prędkością 20 m/s ? 2. Piłka o masie 20 dag spada z wysokości 1

Tresset [83]

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its gonn abe 23

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4 years ago

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A 75.0-kg person climbs stairs, gaining 2.50 m in height. Find the work done to accomplish this task.

ololo11 [35]

Answer:

$W=1837.5J$

Explanation:

A force exerts work when there is a displacement of its point of application in the direction of that force. Therefore, the work done by a system is defined as the inner product between the applied force and the displacement:

$W=\vec{F}\cdot \vec{d}\\W=Fcos\theta d$

In this case, we have:

$F=mg\\h=dcos\theta$

So, replacing this:

$W=mgh\\W=75kg*9.8\frac{m}{s^2}*2.5m\\W=1837.5J$

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4 years ago