Classify use periodic table to classify the elements potassium (k) ,bromine (br) and argon, (ar) according to know likely their atoms are to do the following

a-lose electrons to form positive ions
b-gain electrons to form negative ions
c-neither gain or lose electrons

Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?

What are two different ways you could find the value of a? explain these methods.

Aforce of 8,480 n is applied to a chart to accelerate it at a rate of 26.5 m/s2. what is the mass of the cart?