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lisabon 2012 [21]
2 years ago
13

What is heat energy ? Plz

Physics
1 answer:
mojhsa [17]2 years ago
5 0

Answer:

Heat is the form of energy that is transferred between systems or objects with different temperatures.

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The heat of fusion for water is the amount of energy needed for water to <span>melt. (c)</span>
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Un pendul este suspendat de un ax cu o tijă subțire foarte ușoară.
FromTheMoon [43]

Answer:

A)

B)

C)

Explanation:

Given that a pendulum is suspended by a shaft with a very light thin rod.

Followed by the given information: m = 100 g, I = 0.5 m, g = 9.8 m / s²

We can determine the answer to these questions using angular kinematics.

Angular kinematics is just derived from linear kinematics but in different symbols, and expressions.

Here are the formulas for angular kinematics:

  • θ = ωt
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A) What is the minimum speed required for the pendulum to traverse the complete circle?

We can use the formula v = √gL derived from

B) The same question if the pendulum is suspended with a wire?

C) What is the ratio of the two calculated speeds?

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2 years ago
I need help on this question
raketka [301]

Answer:

there are 5 hydrogen atoms in that formula

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3 years ago
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A motor pulls an 800 kg roller coaster train to the top of a 70 m hill. What is the change in the potential energy of the cars?
Angelina_Jolie [31]

Answer:

548800J

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Given parameters:

Mass of roller coaster  = 800kg

Height of hill  = 70m

Unknown:

Change in potential energy  = ?

Solution:

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Potential energy at the bottom is 0J

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m is the mass, g is the acceleration, h is the height

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The strength or level of sound pressure

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