(vi) Any current larger than 15 mA will permanently damage the LED. The resistor in the circuit has a resistance of 270 N.
Use the results from the investigation to determine the maximum voltage of
the power supply without damaging the LED.
(4)

Scientist have use computer models to create a series of maps that show how susceptible coastal cities in island countries are to the sea rising at different levels. the map shows that a 1 meter rise would swap cities all along the us eastern seaboard. a 6-meter sea level rise with sub merge a large part of florida. thermal expansion has already raise the oceans 10 to 20 centimeters the most likely cause, directly and indirectly, for such a rise in sea level is