Two loudspeakers emit sound waves of the same frequency along the x-axis. the amplitude of each wave is a. the sound intensity is minimum when speaker 2 is 10 cm behind speaker 1. the intensity increases as speaker 2 is moved forward and first reaches maximum, with amplitude 2a, when it is 30 cm in front of speaker 1. what is the wavelength of the sound?

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?