How might the change in Carbon Dioxide in the atmosphere affect Earth’s temperature? Explain your answer using the Greenhouse Effect and terms related to thermal conductors and insulators.

The stopwatch used by a student to measure velocity of a pulse in a slinky was of least count 0.1 second. he stops the stopwatch when a pulse has made 3 journeys from one end to the other of the slinky. he finds the seconds hand to be at 52nd division. calculate the correct time noted by him.