Answer asa which of the following is an example of chemical weathering? a) erosion due to wind-blown sand b) splitting of rick due to expansion of water c) cave formation from the acid in water dissolving limestone d) shrinkage of rock when the water is evaporated

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?

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o