Which energy source was developed through the invention of the atomic bomb?

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

What are similarities and differences of reflection, refraction, diffraction and absorption?

While the change in blank will remain the same during a collision, the force needed to bring an object to a stop can be blank if the time if collision is blank