Calculate the mass of the sun, noting that the period of the earth's orbit around the sun is 3.156 x 107 s and its distance from the sun is 1.496 x 1011 m.

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

Apulley with mass mp and a radius rp is attached to the ceiling, in a gravity field of 9.81 m/s2 and rotates with no friction about its pivot.

How many neutrons does plutonium -196 with an atomic number of 78.