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vaieri [72.5K]
4 years ago
9

How is heat energy transferred from a warm object to a cold object there is direct contact?

Physics
2 answers:
sdas [7]4 years ago
8 0
A is the answer!!!!!!!!!!!!
eduard4 years ago
4 0

<u>Answer:</u> The heat is getting transferred by conduction.

<u>Explanation:</u>

There are 3 modes of heat transfer:

  • <u>Conduction:</u> This type of heat transfer happens when there is direct contact between the two objects.
  • <u>Convection:</u> This type of heat transfer happens when there is a movement of fluid (liquid or gas).
  • <u>Radiation:</u> This type of heat transfer happens when there is direct transfer of energy through space.

We are given:

Heat energy is getting transferred from a warm object to cold object by direct contact.

Hence, the heat is getting transferred by conduction.

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A brick is 32cm long and 10cm wide. It weighs 16N and is lying on the ground. Find the pressure exerted by the brick on the grou
Vaselesa [24]

Answer:

Below

Explanation:

First, we need to convert the dimension from cm to m before plugging it into the equation:

     32 / 100 = 0.32 m

     10 / 100 = 0.1 m

You can use this equation to find the pressure exerted on the ground

     Pressure = Force / Area

Plugging our values in.....

     Pressure = 16 Newtons / (0.1)(0.32)

                     = 16 Newtons / 0.032

                    = 500 N/m^2

Hope this helps! Best of luck <3

4 0
3 years ago
Every star is part of a constellation and is assigned a Greek letter within the constellation. Many stars still bear ancient Ara
Andru [333]

Answer:

All 88 constellations are based on figures that originated in Greek and Middle Eastern mythology. (<em>Correct</em>)

The α star in a constellation is usually brighter than the β star. (<em>Correct</em>)

All stars are part of some constellation. (<em>Correct</em>)

The modern constellations have English names rather than Latin like the ancient ones. (<em>Correct</em>)

Explanation:

Constellations were grouped by different civilizations as mean to be oriented when they were making observations of the sky (they could see as maps of certain regions). Each constellation is an arrangement of several stars in a specific figure (animals, mythological characters and objects), things that were important for that civilization.

The letter \alpha is given to the brightest star in a constellation while the other letters of the Greek alphabet are assigned to the other stars that belong to that specific constellation according to their brightness. For example in the Orion constellation the brightest star is Betelgeuse so it is classified with an \alpha; \beta to Rigel, the second in brightness and so on. That classification system was established by the astronomer Johann Bayer in 1603.

The modern constellations have English names, for example the constellations of Telescopium, Fornax, Sculptor, Chamaeleon, among others.

As constellations represent maps of different regions in the sky, any star will be related with them. For that reason is correct to say that all stars are part of some constellation.

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3 years ago
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<span>The answer is B. Strike slip fault. Shearing occurs when plates or blocks of rocks slide past each other in the opposite direction. This occurs at transform plate margins. An example is the San Andreas Fault running through California, USA. Compression occurs at reverse faults and tension at normal faults. </span>
5 0
4 years ago
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Answer:

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Explanation:

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If the car were being moved sideways, could you determine the force on the car by using the weight equation
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