The speed of an electron having a wavelength of 10-10 m (the order of magnitude of atomic spacing in crystals) is 7.27 x 106 m/s. Through what potential difference must an electron be accelerated to acquire this speed?

Aregular polygon has angkes of size 150° each.how many side has the polygon

An object is 10. cm from the mirror, its height is 3.0 cm, and the focal length is 2.0 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1.33 -1.33 +0.75 -0.75

Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1