Three capacitors having capacitances of 8. 5, 8. 7, and 4. 8 μf are connected in series across a 40 v potential difference. W what is the total energy now stored in the capacitors?.

What would the difference of spectral lines emitted by hydrogen gas in distant galaxies which is normally found at a wavelength of 21 cm on earth, be observed at 21.1 centimeters?

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.