Our Sun is so much brighter than the other stars visible in the sky because it is so to the Earth. The next closest star to Earth is . Which is light years away from Earth.

Which statement is true for light passing into a medium that is more optically dense than the first medium through which it past

Which of the following explains why it took so long for the public to accept the negative health effects of smoking? a)people were waiting for counter reasons, and those were presented.b)scientists had not completely finalized their results, which took 30 years.c)cigarettes were cheaply available and media channels were very inefficient.d)cigarette manufacturers were trying hard to bring an alternative into the market

In automobile steering wheel is shown what is the ideal mechanical advantage blank? if the ama is eight what is the efficiency of the steering wheel?