QUESTION 1 If you are given the following circuit with the AC source as E = 10Sin(3771). What will be the
voltage across R, if R, ER,?
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If you quadruple the temperature of a black body, by what factor will the total energy radiated per second per square meter increase? 1,024 64 16 4 256 submit answer

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve