Suppose you want to determine the average educational level of people throughout the nation. since it would be a great deal of work to survey every citizen, you decide to make your task easier by asking only the people on your campus. will you get an accurate answer? will your survey be distorted by a selection effect? explain.

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.

Rohit is trying to tune an instrument

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot