Aforce of 6.0 n pulls a box 0.40 m along a frictionless plane that is inclined at 36°. what work is being done by the pulling force?

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Let f(x) = x4- 8x2 . find the relativeextrema of this function using the second derivative test.

Which graph best represents the relationship between the electric current and the rate at which a magnet is turning inside an electric generator?

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?