A conical pendulum is formed by attaching a ball of mass m to a string of length L then allowing the ball to move in a horizontal circle of radius r. The string traces out the surface of a cone. A. Find an expression for the tension T in the string.

B. Find an expression for the ball's angular speed w.

I am more interested in how to get the the answer.

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.