According to the first rule, if a force pulls on one end of a rope, the tension in the rope equals the magnitude of the pulling force. what is the magnitude t1 of the tension in rope 1? express your answer in terms of some or all of the variables f, mb and g.

Regarding the history of the universe, which of the following is true? all the chemical elements were created during the big bang, but some have been modified since that time as a result of radioactive decay. the earth formed quickly after the big bang. all the current stars in our galaxy formed about the same time billions of years ago. key elements of which earth and life are made, including carbon, oxygen, and iron, did not exist when the universe was born and were created later in stars.