Choose the scientific theories that have been disproved through scientific advancement. Select all that apply. a) steady-state theory
b) theory of evolution
c) big bang theory
d) geocentric universe
e) phrenology

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

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.

2. which of the following does not affect the electrical resistance of a body? a. material composing the body b. bodies directly surrounding the body c. length of the body > d. temperature of the body