A wave has a frequency of 76 Hz and a wavelength of 6.7 meters.
What is the speed of this wave?

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

What is the most useful equation for electric power?