List three signs that could make you think that a chemical reaction was taking place.
1 answer:
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Answer:
2.31J
Explanation:
the energy for a spring system is given by:
where is the spring constant:
and
is the distance stretched from the equilibrium position.
In the first case
so the energy to stretch the spring 1.81cm is:
and for the second case, the energy to stretch the spring 5.79cm:
so to answer a) we must find the difference between these energies:
Answer: 4.5 V
Explanation:
Given
The voltage of each cell is 1.5 V
If they are connected end to end their potential added to give a higher potential i.e. 1.5+1.5+1.5=4.5 V
