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Calculate the percent change in homicide from 2019 to 2020 for Alabama and the U.S. (give your answer to 2 decimal places)   2019 2020 Percent Change Alabama 7.3 9.6   United States 5.1 6.5  

 Your job as the research director in the Alabama Department of Youth Services is to advise the Director which policies to follow. In the past, you have heard that some institutions have had as many as 80 disturbances in a year.  The average number of disturbances (riots, stabbings, fights, etc.) per year per institution, though, is 37, with a standard deviation of 6.  The distribution is normal.  Answer the following questions.   a) What is the z-score for an institution that had 40 disturbances in one year?  What does this z-score indicate?   b) You want to give raises to the wardens in the prisons that have disturbances in the bottom 10% of the distribution, and fire the wardens in prisons in the top 10%.  What number of disturbances will be the cut-off for each of these decisions?   c) What is the probability that an institution would have 40 or fewer disturbances?   d) What is the probability that an institution would have 36 or more disturbances?  

Exercising reduces stress and is good for your mental health.

Binge drinking poses serious safety risk, including

A person’s sexual drive is called a?

An 80.0 kg skydiver is falling straight down with a terminal velocity of 60.0 m/s. What is the magnitude of the drag force on the skydiver? You can take g = 10 m/s2.

The plot shows the net force in the x direction versus time for a particle of mass 1 kg. Which of the plots of the x component of the velocity versus time corresponds to this net force in the x direction?  

A ball rolls horizontally off the edge of a cliff that is 10 m high. It strikes the ground at a distance 4.0 m away from the edge of the bottom of the cliff. About how long is the ball in the air? Take g = 10 m/s2

Four identical blocks each of mass m are arranged as shown on a frictionless surface. Block 1 is pushed with a force F. The coefficient of friction between the blocks is large enough that the blocks do not slide with respect to one another (so there is a friction between the blocks but no friction from the horizontal surface). We can neglect drag from the air.  Your friend draws the free body diagram on block 3.  You are asked to evaluate their work and you start by making sure they have the right number of forces. You tell your friend 

A set of blocks with masses mA and mB are connected to each other by a string over a frictionless pulley as shown below; both masses remain in contact with the surface which is frictionless. What is the magnitude of the mA’s acceleration?