In order to compare the two temperatures, we need to convert 20°F into Celsius. The formula we need to use is:
Substituting 20°F, we find
And this is less than 0°C, so the answer is
20°F is colder than 0°C.
What is the half life of Strontium-90? Explain your answer
2 answers:
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Answer:
Solution:
As per the question:
Point charge, q =
Test charge,
Work done by the electric force,
Now,
We know that the electric potential at a point is given by:
where
r = separation distance between the charges.
Also,
The work done by the electric force i moving a test charge from point A to B in an electric field: