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3 years ago

PLEASE HELP TOPIC - CONVECTION

Physics

1 answer:

yulyashka [42]3 years ago

3 0

Answer:

At B

Explanation:

If it's placed on place B as soon as the cold water arrived it will have time to heat. Hope this helps and best of luck

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Explain what 'vibrating' means.

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Answer:

Vibrating means to move quickly to and fro.

Explanation:

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3 years ago

A boy starts from point A and moves 5 units toward the east, then turns back and moves 3 units toward the west. What is the disp

Flura [38]

The displacement of the boy is 2 units

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3 years ago

2. Use physics terms to explain the benefits of crumple zones in modern cars.

Elden [556K]

Answer:

They decrease trauma by allowing for a more gradual change in velocity

Explanation:

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3 years ago

Which object has the most gravitational potential energy?

Kipish [7]

Answer: An 8 kg book at a height of 3 m has the most gravitational potential energy.

Explanation:

Gravitational potential energy is the product of mass of object, height of object and gravitational field.

So, formula to calculate gravitational potential energy is as follows.

U = mgh

where,

m = mass of object

g = gravitational field = $9.81 m/s^{2}$

h = height of object

(A) m = 5 kg and h = 2m

Therefore, its gravitational potential energy is calculated as follows.

$U = mgh\\= 5 kg \times 9.81 m/s^{2} \times 2 m\\= 98.1 J (1 J = kg m^{2}/s^{2})$

(B) m = 8 kg and h = 2 m

Therefore, its gravitational potential energy is calculated as follows.

$U = mgh\\= 8 kg \times 9.81 m/s^{2} \times 2 m\\= 156.96 J (1 J = kg m^{2}/s^{2})$

(C) m = 8 kg and h = 3 m

Therefore, its gravitational potential energy is calculated as follows.

$U = mgh\\= 8 kg \times 9.81 m/s^{2} \times 3 m\\= 235.44 J (1 J = kg m^{2}/s^{2})$

(D) m = 5 kg and h = 3 m

Therefore, its gravitational potential energy is calculated as follows.

$U = mgh\\= 5 kg \times 9.81 m/s^{2} \times 3 m\\= 147.15 J (1 J = kg m^{2}/s^{2})$

Thus, we can conclude that an 8 kg book at a height of 3 m has the most gravitational potential energy.

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3 years ago

What is kinematics ?? xD -,- xD

lorasvet [3.4K]

Answer:

Kinematics is a <em>subfield of physics, developed in classical mechanics, that describes the motion of points, bodies (objects), and systems of bodies (groups of objects) without considering the forces that cause them to move.</em>

Explanation:

Hope this helps!

Blazetoxic123

7 0

3 years ago