A volleyball player is jumping up to spike (hit) a ball. Describe the work produced by the muscle at the knee joint during the take-off. Make sure to include the primary muscle responsible for producing the work, the type of muscle contraction occurred, and the effect of work on the total mechanical energy of the player’s body.  Make sure to provide your answer in complete sentences and explain your answer clearly to receive a full credit. 

A mass M is connected to a spring with constant Ks and a damper with constant Kd, and is moving with displacement x with friction Kf. Assume the input if the force f. Find the model of the following mass-spring-damper systems in the state space (find the matrices B). 

Consider the cell with the following pair of electrodes to answer the question below: Sn(s)|Sn2+(aq); Eocell=-0.076V  MnO4-(aq) | Mn2+ | Pt(s); Eocell=+1.49V What species is being reduced during the discharge of this cell? 

Which of the objects below has the GREATEST kinetic energy?

A ball is launched into the air. While the ball is coming down from the apex:

A type of mechanical energy that is possessed by an object due to its height.

Show me the t-distribution table. You may NOT take the exam without it! Show me the front and back of this paper.  You can use a marked-up version of the critical-t table, but no notes on the back, please.  

Increasing the number of phase steps results in an image with better _________ but ______.

 A Facebook news story declares that eating chocolate increases the risk of bladder cancers.  You click on the article and find that it cites a study where rats who consumed more chocolate had an increased risk of cancer depending on how much they consumed.  Rats who consumed the most had a high risk for bladder cancer whereas rats who did not consume chocolate had an extremely low risk of bladder cancer.  Cancer only developed after chocolate was consumed. All other foods given were the same across the rats. What can you conclude from this study?

4. (8 pts) Match the definitions with the appropriate type of bias or effect shown on the right.