Water at 60˚f flows through a nozzle that contracts from a diameter of 3 in. to 0.5 in. the pressure at section 1 is 2500 psfg, and atmospheric pressure prevails at the exit of the jet. calculate (a) the speed of the flow at the nozzle exit and (b) the force required to hold the nozzle stationary. neglect weight.

The necleus of an atom is made up of what subatomic particles?

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)

Abumper car with a mass of 250 kg is traveling at a speed of 4 m/s. this bumper car collides and sticks to a second bumper car with a mass of 250 kg, which is initially at rest. what is the final speed of these two bumper cars after the collision, assuming they remain stuck together?