Which statement best describes one way that molecules differ from atoms

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?

In a good thermo flask the main cause of heat loss is

Aball horizontally thrown from a cliff at 8m/s