The threshold frequency for metallic potassium is 5.46 × 10^14 s^-1. calculate the maximum kinetic energy and velocity that the emitted electron has when the wavelength of light shining on the potassium surface is 350 nm. (the mass of an electron is 9.11 × 10^-31 kg)

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .

It will appear as o2(g) as a reactant 

Adialysis unit requires 78.5 l of water.the estimated digit is 5. 

Answerthe same as;