Asteady flowrate of 2.2 cfs occurs through the pipe system below. use the darcyweisbach friction formula. the four 90o bends have a minor loss coefficient of 0.2 each, and a minor loss coefficient of 0.5 at the reservoir exit. what are the pressures (psig) immediately upstream and downstream of the pump. sketch the egl and hgl for the system.

When objects are charged by they do not need to touch each other. a. friction b. induction c. conduction d. all of these

Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.

Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.