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Kisachek [45]
3 years ago
13

What is the reason for heat transfer from one substance to another?

Physics
2 answers:
katrin2010 [14]3 years ago
5 0
C difference in temperature
hichkok12 [17]3 years ago
4 0

Answer:

A I think

Explanation:

heated air molecules have a lot if pressure and they try to release that pressure by either expanding or transfering

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A car travels at a constant velocity of 40 m/s for 5.0 s, determine its displacement during this 5.0 s.
zimovet [89]

Answer:200 m

Explanation:

V=40m/s

T=5 s

Displacement=v*t

40*5=200

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An astronomer observes an asteroid in the solar system. He notes that the asteroid is three times farther from the Sun than Eart
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450 kilometers ! or 933 million miles

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Where were the girls heading when the car broke down?<br> in the movie *hidden figures*
Ilia_Sergeevich [38]

Explanation:

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5 0
2 years ago
What quantity of heat must be removed from 20g<br>of water at 0°C to change it to ice at 0°C?​
seraphim [82]

The quantity of heat must be removed is 1600 cal or 1,6 kcal.

<h3>Explanation : </h3>

From the question we will know if the condition of ice is at the latent point. So, the heat level not affect the temperature, but it can change the object existence. So, for the formula we can use.

\boxed {\bold {Q = m \times L}}

If :

  • Q = heat of latent (cal or J )
  • m = mass of the thing (g or kg)
  • L = latent coefficient (cal/g or J/kg)
<h3>Steps : </h3>

If :

  • m = mass of water = 20 g => its easier if we use kal/g°C
  • L = latent coefficient = 80 cal/g

Q = ... ?

Answer :

Q = m \times L \\ Q = 20 \times 80 = 1600 \: cal

So, the quantity of heat must be removed is 1600 cal or 1,6 kcal.

<u>Subject : Physics </u>

<u>Subject : Physics Keyword : Heat of latent</u>

4 0
3 years ago
____ is a type of circuit were there is a direct connection between two points in a circuit that aren't supposed to be directly
PtichkaEL [24]

Answer:

Short

Explanation:

I took the same test

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3 years ago
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