A transmission channel between two communicating DTEs is made up of three sections. The first introduces an attenuation of 16 dB, the second introduces an amplification of 20 dB, and the third introduces an attenuation of 10 dB. Assuming a mean transmitted power level of 400 mW, determine the mean output power level of the channel. (3 points)
Answer:
the mean output power level of the channel is 100.475 mW
Explanation:
Given the data in the question;
for the first section; attenuation
16 = 10log₁₀ 400/P₂
P₂ = 10.0475 mW
For the second section; amplification
20 = 10log₁₀ p₂/10.0475
p₂ = 1004.75 mW
For the third section; attenuation
10 = 10log₁₀ p₂/1004.75
p₂ = 100.475 mW
i.e the mean output power level is 100.475 mW
or better still overall attenuation channel = ( 16 - 20) + 10 = 6dB
so
6 = 10log₁₀ 400/P₂
p₂ = 100.475 mV
the mean output power level of the channel is 100.475 mW
What was the opening price of Dow Jones Industrial Average on July 06,2017 in the format of XXXXX.XX?
Answer:
hello your question is poorly written hence I will give you a general answer
answer :
Hence the opening price = 140 - ( 14 * 3 )
= 140 - 42 = 98.00
Explanation:
To determine the opening price we will subtract or add the percentage Increase or decrease of the Dow Jones from the Final price of the Dow Jones
Lets assume :
Dow Jones Increased by 30 %
Dow Jones final price = 140
Hence the opening price = 140 - ( 14 * 3 )
= 140 - 42 = 98.00
What is paleobotony and what significance does this field have to our understanding of plants? Environmental science
Answer: See explanation
Explanation:
Paleobotany is simply referred to as the branch of botany that deals with the study of the fossils of plants and the identification of the remains of plants.
Paleobotany lays emphasis on the fossils of plant fossils, such as fungi, algae, ferns, etc. It should be noted that paleobotany is vital as it helps scientists understand the evolution of plants. This is vital in determining the classes to which certain plants belongs.
People with skills and training in areas such as marketing or accounting are an important part of the manufacturing industry.
True
False
Answer:
true
Explanation:
Which type of memory is programmed at the factory? RAM ROM Cache or Virtual memory
Answer:
RAM, which stands for random access memory, and ROM, which stands for read-only memory, are both present in your computer. RAM is volatile memory that temporarily stores the files you are working on. ROM is non-volatile memory that permanently stores instructions for your computer.
Explanation:
Tea brewed for iced tea should never be held for more than which of the following time periods?
1 hour
4 hours
8 hours
12 hours
An organization sets its standards for quality according to the best product it can produce.
True
False
Answer:
True!! took the test
Explanation: