Physics, 08.02.2022 09:00 lizreed2002
A progressive wave equation is given as y = 0.2 sin ( 200nt - Tx/15) where t is in second and both x and y in cm. Determine:
1. the velocity of the wave,
ii. the maximum velocity of the particles, iii. the velocity at P, a distance of 45 cm from the source at time = 0.05s.
Answers: 2
Physics, 22.06.2019 03:30
As part of an industrial process, air as an ideal gas at 10 bar, 400k expands at steady state through a valve to a pressure of 4 bar. the mass flow rate of air is 0.5 kg/s. the air then passes through a heat exchanger where it is cooled to a temperature of 295k with negligible change in pressure. the valve can be modeled as a throttling process, and kinetic and potential energy effects can be neglected. (a) for a control volume enclosing the valve and heat exchanger and enough of the local surroundings that the heat transfer occurs at the ambient temperature of 295 k, determine the rate of entropy production, in kw/k. (b) if the expansion valve were replaced by an adiabatic turbine operating isentropically, what would be the entropy production? compare the results of parts (a) and (b) and discuss.
Answers: 3
Physics, 22.06.2019 06:00
An ideal gas is held in a container at constant volume. initially, its temperature is 5 degrees c and its pressure is 1.2 atm. what is its pressure when its temperature is 43 degrees c? answer in units of atm
Answers: 2
Physics, 22.06.2019 07:00
Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?
Answers: 1
Physics, 23.06.2019 00:00
You are standing on a boat. which of the following strategies will make the boat start moving? a. pushing the mast b. throwing some cargo out of the boat c. pushing the front ofthe boat d. pushing another passenger
Answers: 3
A progressive wave equation is given as y = 0.2 sin ( 200nt - Tx/15) where t is in second and both x...
Mathematics, 10.09.2020 17:01
Mathematics, 10.09.2020 17:01
English, 10.09.2020 17:01
Mathematics, 10.09.2020 17:01
Mathematics, 10.09.2020 17:01
Mathematics, 10.09.2020 17:01
Mathematics, 10.09.2020 17:01
Mathematics, 10.09.2020 17:01
Mathematics, 10.09.2020 17:01
Mathematics, 10.09.2020 17:01
Mathematics, 10.09.2020 17:01
Mathematics, 10.09.2020 17:01
Mathematics, 10.09.2020 17:01
Mathematics, 10.09.2020 17:01
Mathematics, 10.09.2020 17:01
Mathematics, 10.09.2020 17:01
English, 10.09.2020 17:01
Social Studies, 10.09.2020 17:01
Mathematics, 10.09.2020 17:01
Mathematics, 10.09.2020 17:01