Two tiny particles carrying like charges of the same magnitude are apart. if the electric force on one of them is what is the magnitude of the charge on each of these particles?(k = 1/4πε0 = 9.0 × 109 n • m2/c2)

Which type of reaction always has an element and a compound as reactants

Which element forms an ionic bond with flourine? 1) fluorine 2) carbon 3) potassium 4) oxygen

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.