Physics, 23.02.2021 03:10, supercutedonuf3753

Question 6 of 10 Which two characteristics make electromagnetic waves effective in

communication?

O A. They carry more energy than visible light.

B. They do not require a medium to carry information.

C. They carry information very quickly.

D. They move faster through matter than through space.

Answers: 1

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 10:00, kanonhuffmanp3rnmy

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

Answers: 2

continue

Physics, 22.06.2019 17:40, yoongnzl

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.

Answers: 1

continue

Physics, 22.06.2019 19:30, QueenNerdy889

Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).

Answers: 3

continue

Physics, 22.06.2019 21:30, kiasiab17

While carrying a heavy box up the stairs, you set the box on a step and rest. then you pick up the box and carry it to the top of the stairs. describe these actions in terms of balanced and unbalanced forces acting on the box.

Answers: 1

continue

Do you know the correct answer?

Question 6 of 10 Which two characteristics make electromagnetic waves effective in

comm...