How many kilograms are in 2.5 grams ?

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

Explain what happens at the saturation point when adding salt to water at room temperature.