39. What is the change in momentum for a 5,000 kg ship in outer space that experiences no net force over a 1 hr

period?

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

Describe the function of the endomembrane system? what organelles are involved?

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?