The application of momentum equation to a control volume presumes?
1. frictionless fluid
2. steady flow
3. uniform flow
4. constant velocity over the cross-section

A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little

Of is j/kg·k. if a 2.6 kg of isk to k,is ?