(a) Two identical open boxes originally contain the same volume of water. One is kept at 15°C and the other at 85°C for the same
length of time.
Fig. 4.1 shows the final water levels.
With reference to the energies of the water molecules, explain why the levels are different.
Fig. 4.1 shows the final water levels.
With reference to the energies of the water molecules, explain why the levels are different.
1 answer:
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<h2><u>Question</u><u>:</u><u>-</u></h2>
Ryan applied a force of 10N and moved a book 30 cm in the direction of the force. How much was the work done by Ryan?
<h2><u>Answer:</u><u>-</u></h2><h3>Given,</h3>=> Force applied by Ryan = 10N
=> Distance covered by the book after applying force = 30 cm
<h3>And,</h3>30 cm = 0.3 m (distance)
<h3>So,</h3>=> Work done = Force × Distance
=> 10 × 0.3
=> 3 Joules