Select the correct answer. Using the statistical definition of entropy, what is the entropy of a system where W= 4?
ОА.
1.87 x 10-23 joules/kelvin
OB
1.56 x 10-23 Joules/kelvin
Ос.
1.91 x 10-23 joules/kelvin
OD
2.07 x 10-23 joules/kelvin

Find an expression for the electric field e⃗ at the center of the semicircle. hint: a small piece of arc length δs spans a small angle δθ=δs /r, where r is the radius. express your answer in terms of the variables q, l, unit vectors i^, j^, and appropriate constants.