Mintu wants to increase the heat transfer between a metal iron and another piece of metal he wants to shape. he decides to increase the time the two metals are in contact, use a larger metal iron, and use a new metal material with a higher specific heat.
where is mintu's error?
a.)mintu should have decreased the size of the metal iron.
b.)mintu should have decreased the time he touches the two metals.
c.)mintu should have chosen a material with a lower specific heat.
d.)mintu should have chosen a material the same temperature as the iron.

Answer;

a.) Mintu should have decreased the size of the metal iron.

Explanation;

Thermal conductivity, also called heat conduction, is the flow of energy from something of a higher temperature to something of a lower temperature.

Several factors affect thermal conductivity and the rate that energy is transferred. These includes;

The kind of material being used in thermal conductivity can affect the rate of energy flowing between the two regions. The greater the conductivity of the material, the faster the energy flows.

The length of the material the energy must flow through can affect the rate at which it flows. The shorter the length, the faster it will flow.

Others are the temperature difference and also the cross section type.

Hello there!

As I understand, Mintu heats the metal iron and put it in contact with the other piece of metal in order to increase the temperature of it.

The specific heat of an object is the amount of energy (in the form of heat) needed to increment the temperature of the object.

This means that if the metal that Mintu want's to shape has a big specific heat, this metal will need more energy to reach the desired temperature.

The time in contact between the two metals increments the time where the second metal is receiving energy from the metal iron, so this is a good decision.

Using a larger metal iron means that this can absorb more energy (because this has more mass) and if there is more energy in the metal iron, there also is more energy that can leave the metal iron and increase the temperature in the other metal.

Then, you can see that the right option is option C, Mintu should have chosen a material with lower specific heat, because a material with lower specific heat requires less energy to increase his temperature.

32: from largest to smallest, this hierarchy includes eons, eras, periods, epochs, and ages.

33: answer is c

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