Magnetic flux is measured in webers. Left hands are for negative charges and Right hands are for positive charges. Solenoids are stronger with more current or more wire turns or adding a soft iron core. Wave Phenomena Sound waves are longitudinal and mechanical. All angles in wave theory problems are measured to the normal .
Blue light has more energy.
A prism produces a rainbow from white light by dispersion. The amplitude of a sound wave determines its energy. At the critical angle a wave will be refracted to 90 degrees. According to the Doppler effect a wave source moving toward you will generate waves with a shorter wavelength and higher frequency. Double slit diffraction works because of diffraction and interference.