A few student throws a 0.1 kg dart at an angle of 20° to the horizon. Then the student changes the throwing angle. Which angle will maximize the distance the dart will
travel before it returns to its original height:

Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.

Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.

Which branches of natural science include the study of an organism that lived 10 million years ago