Answers: 2
Physics, 22.06.2019 12:20
Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)
Answers: 1
Physics, 23.06.2019 02:40
An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)
Answers: 1
Physics, 23.06.2019 13:30
You have 80 g of 60oc water and 80 g or 10oc water. what is the final temperature when the two are mixed? explain.
Answers: 1
A light wavelength is 445nm falls on a piece of metal. The maximum energy of the electron doubles wh...
Mathematics, 14.06.2020 05:57
Mathematics, 14.06.2020 05:57
Mathematics, 14.06.2020 05:57
Mathematics, 14.06.2020 05:57
Mathematics, 14.06.2020 05:57
English, 14.06.2020 05:57