A string of 20 identical Christmas tree lights are connected in series to a 120 V source. The string dissipates 59 W. (a)One of the bulbs quits burning. The string has a wire that shorts out the bulb filament
when it quits burning, dropping the resistance
of that bulb to zero. All the rest of the bulbs
remain burning
What is the resistance of the light string
now?
Answer in units of N.
(b)How much power is dissipated by the string
now?

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to