Stars that form from a large amount of mass (5 x mass of the sun) usually end life by? A-exploding as a supernova, which may leave a neutron star or black hole remaining.
B-expanding as a red giant, then collapsing into a white dwarf.
C-fading as a blue quasar, then collapsing into a black hole.
D-leaping into hyperspace as a pink Death Star, then exploding into a fuzzy planetary nebula.

If you quadruple the temperature of a black body, by what factor will the total energy radiated per second per square meter increase? 1,024 64 16 4 256 submit answer

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.