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3 years ago

Conduction stops when all substances have

Physics

2 answers:

stepladder [879]3 years ago

5 0

Explanation:

When two objects or substances that have different temperature are placed in contact with each other then there will be flow of heat from hotter object to colder object.

This transfer of heat will continue until the temperature of both the objects become equal.

For example, if a metal box has $T_{1}$ temperature that is higher than another metal box adjacent to it which has $T_{2}$ temperature. Then heat will flow from $T_{1}$ to $T_{2}$ until the temperature of both the boxes become equal to $T_{3}$ .

Hence, we can conclude that conduction stops when all substances have same temperature.

Yakvenalex [24]3 years ago

4 0

Answer:-

It stops when the temperature of all the particles/atoms is equal.

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2 years ago

An automobile traveling 95 km/h overtakes a 1.30-km-long train traveling in the same direction on a track parallel to the road.

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Answer:

Same direction: t=234s; d=6.175Km

Opposite direction: t=27.53s; d=0.73Km

Explanation:

If the automobile and the train are traveling in the same direction, then the automobile speed relative to the train will be $v_{AT}=v_A-v_T$ (the train must see the car advancing at a lower speed), where $v_A$ is the speed of the automobile and $v_T$ the speed of the train.

So we have $v_{AT}=(95km/h)-(75Km/h)=20Km/h$ .

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And in that time the car would have traveled (relative to the ground):

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$t = \frac{L}{v_{AT}} = \frac{1.3Km}{170Km/h} = 0.00765h=27.53s$

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2 years ago