An unbalanced force is at work when A.
a book sits on a shelf.
B.
a piece of paper is on the floor.
C.
a model rocket takes off.
D.
a glass sits on a table.

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 elements is in the same period as phosphorus? a. carbon c. nitrogen b. magnesium d. oxygen select the best answer from the choices provided a b c d

Which is the most accurate name for the ionic compound cas?