When this chemical reaction occurs, the product is a) a salt called lithium fluoride. b) a new element is formed c) the replacement of one element by another. d) the decomposition of two elements, lithium and fluorine.

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

One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?

Eddy whose mass is 55kg climbs up the 1.50 meter high stairs in 2s. calculate eddy’s power rating