Astudent places one end of an iron nail in a cup of boiling water. eventually, the whole nail is hot. he says that the heat transferred through the nail by convection. which of the following explains why his statement is incorrect

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?

Observations show that interstellar clouds can have almost any shape and

Which composition of water moves to begin a deepwater current?