When a contracting hot ball of stellar gas spins into a disk shape, it cools faster due to: increased convection currents.
increased radiation transfer.
increased surface area to volume.
decreased insulation.
eddy currents.

the answer is c i did the same question so i know that's right!

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this

part 1: which substance has a higher solubility?

a

smallest amount left undissolved atall temps in table shown most has dissolved high sol'by

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j