Water from a reservoir passes over a dam through a turbine and discharges from a 70-cm id pipe at a point 55 m below the reservoir surface. the turbine delivers 0.80 mw. calculate the required flow rate of water in m3 /min if friction is neglected. (see example 7.7-3.) if friction were included, would a higher or lower flow rate be required? (note: the equation you will solve in this problem has multiple roots. find a solution less than 2 m3/s.)

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?

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