Select the correct equation for the sum of the torques on J1.  ***Typo, r1 should be r2, all other elements of the equation are correct!***

Create a mathematical model for the problem 2.14 (2e) or 2.8 (1e) in the textbook. Don’t forget to pay attention to the hints I gave in the videos. 

Describe in your own words why fc, the contact force between the gears is represented as a force and not a torque. 

A reality television show has 18 participants: 10 males and 8 females. Five of the participants are chosen to receive a reward. What is the probability that all five of the participants that are chosen are male?

Let X = the score out of 3 points on a randomly selected pop quiz in a statistics class. The table gives the probability distribution of X. Value 0 1 2 3 Probability 0.01 0.02 0.18 0.79 Calculate the expected value of X.

Assume a randomly chosen battery has a probability of 0.8 of working. A remote control requires two working batteries in order to work. What is the probability a remote control will work if two randomly chosen batteries are put into a remote control?

Assume the random variable X is normally​ distributed, with mean of 47 and standard deviation of 7. Find the 13th percentile.

Why does the speaker mention business schools in France?

Sometimes a speaker uses signal words to indicate that two topics are going to be compared. What is the suggestion in our textbook for taking notes when you hear this?

Match the sentences with the words that fit in the blanks. Each word can only be used once. Word List: acknowledge   communicate   domains   facilitate   global   nevertheless   official   proficient   retain   unprecedented