Help with 2 problems! they seem so simple but I can't get it
Posted: Mon Apr 16, 2007 6:41 am
HELP!!
I am stuck with this 2 problems from an undergrad book. They seem so easy but I can't find the answer (and this book only give answers to some questions...
Can u give me a tip in any one of those PLEASE?????
1. Water flows over a section of niagara falls at a rate of 1.20 kg/s and falls 5.0 m. What is the power dissipated by the waterfall?
2. A 2 kg ball has zero kinematic and potential energy. You drop this ball into a 10. m-deep well. Just before the ball hits the bottom, the sum of its potential and kinetic energy is? How about after the ball comes to a stop?
thank you sooooo much for any help!!!!
Melissa
I am stuck with this 2 problems from an undergrad book. They seem so easy but I can't find the answer (and this book only give answers to some questions...
Can u give me a tip in any one of those PLEASE?????
1. Water flows over a section of niagara falls at a rate of 1.20 kg/s and falls 5.0 m. What is the power dissipated by the waterfall?
2. A 2 kg ball has zero kinematic and potential energy. You drop this ball into a 10. m-deep well. Just before the ball hits the bottom, the sum of its potential and kinetic energy is? How about after the ball comes to a stop?
thank you sooooo much for any help!!!!
Melissa