Which of the following is the best definition of constructive interference? a. the subtraction of one wave from another b. the addition of one wave to another c. the blocking of one wave by another d. the cancelling of one wave by another

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)

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

Why does lightning travel from clouds to the ground?