Lake tuscaloosa has an elevation of 223'. it was created in 1970 by damming north river, which feeds into the black warrior river at an elevation of 123'. if the average flow rate through north river is 3 m3 /s, and 90% of the river is diverted to a hydroelectric facility with an efficiency of 91%, find the electricity that could be generated here, in kwh, per year of op

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

If y gets smaller as x gets bigger and y have an relationship?