Acertain source of sound waves radiates uniformly in all directions. at a distance of 14 m from the source the intensity level is 67 db. what is the total acoustic power output of the source, in watts? (note: the reference intensity i 0 is 1.0 × 10-12 w/m2.)

The four giant gas points that are made primarily of lightweight elements are

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.