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Ray Of Light [21]
3 years ago
15

Which method is used to deliver heat in most central heating systems?

Physics
2 answers:
Wewaii [24]3 years ago
5 0
Theu use convection currents to blow the air aroubd the house
inessss [21]3 years ago
4 0
The right  answer is B. hope this helps you :)
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Can a body be in equilibrium if only one external force act on its ? explain
Mariulka [41]

Answer:

Explanation:

If there is only 1 force, the body can never be in equilibrium, providing that the force is not zero (and that would hardly be a force. Zero is possible in math and it means something. It is debatable in physics).

You cannot think of a condition where something is stationary on planet earth and there are not 2 forces or more forces involved.

Think of something like a block of wood sitting on a table. It is not moving, we'll say. Gravity is holding it down, but what is pushing up on it?

The table is. There are 2 forces and they are equal in magnitude, but opposite in direction. That matters.

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3 years ago
A whale comes to the surface to breathe and then dives at an angle 24 degrees to the horizontal surface of the water. The whale
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Given that,

A whale dives at an angle of 24 degrees to the horizontal surface of the water.

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d_x=d\cos\theta\\\\=145\times \cos(24)\\\\=132.46\ m

The vertical component of displacement is :

d_y=d\sin\theta\\\\=145\times \sin(24)\\\\=58.97\ m

<h3>Hence, the horizontal and vertical components of the displacement of the whale are 132.46 m and 58.97 m.</h3>
7 0
2 years ago
Which sequence shows all the colors of visible light arranged from shortest to longest wavelength?
Cloud [144]
Violet
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4 1
3 years ago
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State whether plastic is biodegradable or non-biodegradable ? Give reasons for your answer.​
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non biodegradable

Explanation:

It is non biodegradable because plastic cannot dispose off easily ..

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