A student immersed 200 pennies (each having a mass of 3 g) in boiling water. After they reached thermal equilibrium, she quickly fished them out and dropped them into 0.24 kg of water at 20°C in an insulated container of negligible mass. What was the final temperature of the coins? Pennies are made of a metal alloy—mostly zinc—with a specific heat capacity of 390 J/(kg • K). For water, c = 4.19 × 103 J/(kg • K). A. 39.2 C

B. 35.1 C

C. 20.5 C

D.45.1 C

where’s the list ? the question is incomplete

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

energy stored in the capacitor= 9.72 x 10⁻⁴ j

explanation:

the energy stored in the capacitor is given by

e= 1/2 c v²

e= energy stored

c= capacitance= 1.5 µc= 1.5 x 10⁻⁶f

v= potential difference=36 v

so energy stored= e= 1/2 (1.5 x 10⁻⁶) (36)²

energy stored= 9.72 x 10⁻⁴j