Question

A car covers the first half of the distance between two places at a speed of 40 km/h and the second half at 60 km/h. Find the average speed of a car
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23 g of copper sulphate is dissolved in 100 g of water at 293 K. What is the concentration of solution at this temperature?
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Answer 1

Answer:

is the velocity of the car in the second half. Therefore, the average velocity of the car is 48 km/h.So, the correct answer is option (B).

Explanation:

Answer 2

Answer:

I already answered the question..

Explanation:

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