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bezimeni [28]
3 years ago
9

What is the scientific meaning of energy?

Physics
1 answer:
JulijaS [17]3 years ago
8 0

Answer:

it is B

Explanation:

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The diagram shows the movement of air as a result of convection currents. At which point is the air at its highest density?
stellarik [79]

When you bring two objects of different temperature together, energy will always be transferred from the hotter to the cooler object.  The objects will exchange thermal energy, until thermal equilibrium is reached, i.e. until their temperatures are equal.  We say that heat flows from the hotter to the cooler object.  Heat is energy on the move.  

Units of heat are units of energy.  The SI unit of energy is Joule.  Other often encountered units of energy are 1 Cal = 1 kcal = 4186 J, 1 cal = 4.186 J, 1 Btu = 1054 J.

Without an external agent doing work, heat will always flow from a hotter to a cooler object.  Two objects of different temperature always interact.  There are three different ways for heat to flow from one object to another.  They are conduction, convection, and radiation.

 

6 0
3 years ago
Read 2 more answers
If two opposing forces are equal, then the net force is 0 N.<br><br> true or false?
Fofino [41]

Answer:

false

Explanation:

6 0
2 years ago
What is the classification of the reaction shown in the equation below?
ad-work [718]

Answer:

d

Explanation:

because is a reducing agent, O 2 is an oxidizing agent.

6 0
2 years ago
According to the law of reflection-
Ira Lisetskai [31]

Answer:

b is correct answer

thank you

7 0
3 years ago
Conservation of Momentum Practice
Yakvenalex [24]

Answer:

Before: 0 m/s  

After: -4 m/s

Explanation:

Before: Since you and your beau started at rest, your beau initial velocity is 0 m/s.

After: Since we have to conserve momentum,

momentum before push = momentum after push.

The momentum before push = 0 (since you and your beau are at rest)

momentum after push = m₁v₁ + m₂v₂ were m₁ = your mass = 60 kg, v₁ = your velocity after push = 3 m/s, m₂ = beau's mass = 45 kg and v₂ = beau's velocity.

So, m₁v₁ + m₂v₂ = 0

m₁v₁ = -m₂v₂

v₂ = -m₁v₁/m₂ = -60 kg × 3 m/s ÷ 45 kg = -4 m/s

So beau moves with a velocity of 4 m/s in the opposite direction

8 0
2 years ago
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