Calculate the wavelength λ1 for gamma rays of frequency f1 = 7.50×1021 hz .

Astate of matter all that has define volume and can flow is a(n)

In a system, when potential energy decreases, then entropy also decreases. true false

Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v