What is the main difference between the geocentric and heliocentric models of planetary motion?​

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

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?

The mini-refrigerator fire was most likely caused by what type of wiring?