Astream of water strikes a stationary turbine blade horizontally as the drawing illustrates the incident water stream has a velocity of 4 m s while the exiting water stream has a velocity of 4 m s the mass of water per second that strikes the blade is 31 kg s find the magnitude of the average force exerted on the water by the blade

248 Newton

Explanation:

force = rate of change of momentum

change of velocity

= 4 + 4 = 8 m/s



rate of change of momentum = mass per second x change of velocity



= 31 kg/s x 8 m/s 

= 248 kg m/s^2 or Newtons

b mirrors submit a iisner? e. for which optical devices does d sometimes have a positive value? o a a and b o b. a and c o c. b and d 0 d. b and cb

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods