Answer: Addition polymerization & Condensation polymerization
Explanation:
Let thermal capacity of the vessel be C' J K-1
Heat energy given by hot water = 40 x 4.2 x (60 - 30) = 5040 J
Heat energy taken by cold water = 50 x 4.2 x (30 - 20) = 2100 J
Heat energy taken by vessel = C' x (30 - 20) = 10 C' J
If there is no loss of heat energy,
Heat energy given by hot water = Heat energy taken by cold water and vessel
or 5040 = 2100 + 10 C'
or 10 C' = 2940
or C'= 294 J K-1
Thus, thermal capacity of vessel = 294 J K-1.
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<span>the copper pot heats up faster because it is a better conductor</span>
Answer:

Explanation:
As we know that initial and final speed of the beam is zero
so we can use energy conservation here to find the applied force
So we will have
work done by all the forces = change in kinetic energy of the beam
so we will have



so we will have

