What is the force on a 2 c now placed at the center of the square

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?

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.