A plane wave has equation y=25sin(120t-4x) find the wavelength, wave velocity, frequency and period

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

Which basic property determines a colored light's placement on the spectrum of visible light? a. speed b. frequency c. amplitude d. velocity