A friend suggests the following question for a science experiment. Discuss ways that the question could be reworded to make it a more appropriate scientific question. - How much pollution is in urban streams?

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?

Determine the maximum r-value of the polar equation r =3+3 cos 0

In which of the following is positive work done by a person on a suitcase