Complete the table below and draw the ray diagram below the chart associated with the problem. A 2cm tall object is 8 cm from a convex lens that has a focal length of 4 cm.

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

If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

Using the work energy theorem. what is the velocity of a 850kg car after starting at rest when 13,000j of work is done to it.