three charges are placed in a line. rank the 3 configurations by least to most work needed to for the configurations a) -x,2x, x b) x,-x,2x c) 2x, x,-x​

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?

Abanked road comer of radius 146 m is to be constructed. if the comer is designed for vehicles moving with a speed of 20.0 m/s, what should the banking angle be, in units of degrees?

What is the measurement of how fast an object moves relative to a reference point?