sound travels at 1500m/s through water at 25 degrees Celsius. under these conditions, how long would it take sound to travel 300m?

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

Which of the following is not am example of a polymer? protein nylon kevlar concreta

=force × distance a. work b. velocity c. pressure d. momentum