Engineering, 03.04.2020 21:33 ninaaforever

A team of scientists is designing a radar as a probe for measuring the depth of the ice layer over the Antarctic landmass. In order to measure a detectable echo due to the reflection by the ice-rock boundary, the thickness of the ice sheet should not exceed three skin depths. If for ice and if the maximum anticipated ice thickness in the area under exploration is 1.2 km, what frequency range is useable with the radar?

Wave Propagation:
Wave propagation is the way a wave travel in any way. Propagation may occur in a vacuum as well as in other materials for electromagnetic waves. However, other types of waves can't propagate in a vacuum and require a transmission material to exist.

Answers: 2

Show answers

Another question on Engineering

Engineering, 04.07.2019 19:10

10 kg of co2 is initially contained at 400 kpa and 300 k. the gas constant for carbon dioxide is 189 j/lkg k) and has a specific heat ratio, k, of 1.289. isentropic expansion then occurs until the pressure is 200 kpa. a) determine the initial volume of co2 in m. b) determine the final temperature in k. c) determine the work done by the system during the expansion kl.

Answers: 2

Answer

Engineering, 04.07.2019 19:10

In general, how do thermosetting plastics compare to thermoplastics in mechanical and physical properties?

Answers: 3

Answer

Engineering, 04.07.2019 19:10

Estimate the change in specific internal energy au and specific enthalpy h from inlet to outlet for ethylene glycol (a liquid) flowing through each of the following devices: (a) a heat exchanger where the glycol temperature increases from 20 °c to 80 °c; (b) a pump operating at about 25 °c and increasing the glycol pressure from 100 kpa to 8 mpa.

Answers: 2

Answer

Engineering, 04.07.2019 19:20

Apiping systems consists of 6 m of 6-std type k and 12 m of 4-std type k, both drawn copper tubing. the system conveys ethylene glycol at a rate of 0.013 m3/s. the pressure drop across the system is to be calculated. there are two 90° elbows in the 6-in pipe, a reduction from the 6-in pipe to the 4-in pipe and four 90° elbows in the 4-in pipe. all fittings are soldered (same as flanged) and regular. the inlet and outlet of the system are at the same height.

Answers: 1

Answer

You know the right answer?

A team of scientists is designing a radar as a probe for measuring the depth of the ice layer over t...

Questions