Engineering, 20.12.2019 06:31, marialion5278
A0.5-mhz antenna carried by an airplane flying over the ocean surface generates a wave that approaches the water surface in the form of a normally incident plane wave with an electric-field amplitude of 3000 v/m. sea water is characterized by and the plane is trying to communicate a message to a submarine submerged at a depth d below the water surface. if the submarine’s receiver requires a minimum signal amplitude of 0.01 what is the maximum depth d to which successful communication is still possible?
Answers: 1
Other questions on the subject: Engineering
Engineering, 03.07.2019 15:10, EmilySerna
Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.
Answers: 1
Engineering, 04.07.2019 18:20, luisgonz5050
Find the kinematic pressure of 160kpa. for air, r-287 j/ kg k. and hair al viscosity of air at a temperature of 50°c and an absolute (10 points) (b) find the dynamic viscosity of air at 110 °c. sutherland constant for air is 111k
Answers: 3
Engineering, 04.07.2019 18:20, xcapo1x
Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.
Answers: 2
Do you know the correct answer?
A0.5-mhz antenna carried by an airplane flying over the ocean surface generates a wave that approach...
Questions in other subjects:
Medicine, 13.10.2020 01:01
English, 13.10.2020 01:01
History, 13.10.2020 01:01
Mathematics, 13.10.2020 01:01
