answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mart [117]
2 years ago
14

A signal travels from point A to point B. At point A, the signal power is 100 W. At point B, the power is 90 W. What is the atte

nuation in decibels?
Computers and Technology
1 answer:
11Alexandr11 [23.1K]2 years ago
7 0

Answer:

Attenuation = 0.458\ db

Explanation:

Given

Power at point A = 100W

Power at point B = 90W

Required

Determine the attenuation in decibels

Attenuation is calculated using the following formula

Attenuation = 10Log_{10}\frac{P_s}{P_d}

Where P_s = Power\ Input and P_d  = Power\ output

P_s = 100W

P_d = 90W

Substitute these values in the given formula

Attenuation = 10Log_{10}\frac{P_s}{P_d}

Attenuation = 10Log_{10}\frac{100}{90}

Attenuation = 10 * 0.04575749056

Attenuation = 0.4575749056

Attenuation = 0.458\ db <em>(Approximated)</em>

You might be interested in
IANA has primarily been responsible with assigning address blocks to five regional internet registries (RIR). A tech needs to re
VikaD [51]

Answer:

The American Registry for Internet Numbers ARIN

Explanation:

The American Registry for Internet Numbers (ARIN) is a not for profit organization that serves as the administrator and distributor of Internet numeric resources such as IP addresses (IPv4 and IPv6) ASN for the United States, Canada, as well as North Atlantic and Caribbean islands

There are four other Regional Internet Registry including APNIC, RIPE NCC, LACNIC and AFRINIC.

6 0
2 years ago
assume that name is a variable of type stirng that has been assigned a value write an expression whose value is the last charact
Snezhnost [94]

Answer:

The most straight forward way to do it: in general string are zero index based array of characters, so you need to get the length of the string, subtract one and that will be the last character, some expressions in concrete languages would be:

In Python:

name = "blair"

name[len(name) - 1]

In JavaScript:

name = "blair"

name[name.length - 1]

In C++:

#include <string>

string name = "blair";

name[name.length() - 1];

7 0
1 year ago
Modify the guessing-game program so that the user thinks of a number that the computer must guess.
Triss [41]

Answer:

import random

import math

smaller = int(input("Enter the smaller number: "))

larger = int(input("Enter the larger number: "))

count = 0

print()

while True:

   count += 1

   myNumber = (smaller + larger) // 2

   print('%d %d' % (smaller, larger))

   print('Your number is %d' % myNumber)

   choice = input('Enter =, <, or >: ')

   if choice == '=':

       print("Hooray, I've got it in %d tries" % count)

       break

   elif smaller == larger:

       print("I'm out of guesses, and you cheated")

       break

   elif choice == '<':

       larger = myNumber - 1

   else:

       smaller = myNumber + 1

Explanation:

The code to be Modified is as indicated below:

# Modify the code below:

import random

smaller = int(input("Enter the smaller number: "))

larger = int(input("Enter the larger number: "))

myNumber = random.randint(smaller, larger)

count = 0

while True:

   count += 1

   userNumber = int(input("Enter your guess: "))

   if userNumber < myNumber:

       print("Too small")

   elif userNumber > myNumber:

       print("Too large")

   else:

       print("You've got it in", count, "tries!")

       break

Detailed Explanation:

Line 3 and 4 of the codes prompts the user to enter a smaller and larger number. Line 5 we initiate the formula for minimum number of guesses. Line 14 and 17 prints out the output  I'm out of guesses, and you cheated and Hooray, I've got it in X after validating the conditions.

7 0
2 years ago
Interactive sites where users write about personal topics and comment to a threaded discussion are called 
Sedaia [141]

The answer to your question is A. blogs

3 0
2 years ago
An Open Authorization (OAuth) access token would have a _____ that tells what the third party app has access to
qaws [65]

Answer:

scope

Explanation:

An Open Authorization refers to a method  that helps to share data using third party services without giving your credentials and there is a mechanism in an Open Authorization that allows to limit the access that the third party app has to an account that is called scope. Because of that, the answer is that an Open Authorization (OAuth) access token would have a scope that tells what the third party app has access to because it is what limits the access the app has to an account and it shows the access given in a consent screen.

3 0
2 years ago
Other questions:
  • Samantha was calculating a mathematical formula on an electronic spreadsheet. She used multiple values to recalculate the formul
    12·2 answers
  • What is a typical grace period for a credit card...
    15·2 answers
  • Propane also known as LP gas, is often mixed with about _______ percent of other gases, such as butane, propylene, and mercaptan
    13·1 answer
  • A company wants to publish Knowledge articles to its Customer Community. The articles should be organized for easy navigation by
    6·1 answer
  • Write a client program that writes a struct with a privateFIFO name (call it FIFO_XXXX, where XXXX is the pid that you got from
    11·1 answer
  • Design a program that asks the user for a series of names (in no particular order). After the final person’s name has been enter
    5·1 answer
  • Fill in the blanks to make the factorial function return the factorial of n. Then, print the first 10 factorials (from 0 to 9) w
    6·1 answer
  • What is the value of the variable result after these lines of code are executed?
    5·2 answers
  • Write a program using integers userNum and x as input, and output userNum divided by x four times. Ex: If the input is 2000 2, t
    5·1 answer
  • Prompt
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!