Two radio antennas A and B radiate in phase at a frequency of 15 MHz. Antenna B is 120 m to the right of antenna A. Consider point Q along the line connecting the antennas, a horizontal distance x to the right of antenna A. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Determining wavelength. Part A What is the smallest nonzero value of x for which there will be constructive interference at point Q

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law

What are the examples for scaler quantities

Now that we have a feel for the state of the circuit in its steady state, let us obtain the expression for the current in the circuit as a function of time. note that we can use the loop rule (going around counterclockwise): e−vr−vl=0. note as well that vr=ir and vl=ldidt. using these equations, we can get, after some rearranging of the variables and making the subsitution x=er−i, dxx=−rldt. integrating both sides of this equation yields x=x0e−rt/l. use this last expression to obtain an expression for i(t). remember that x=er−i and that i0=i(0)=0. express your answer in terms of e, r, and l. you may or may not need all these variables. use the notation exp(x) for ex.