1answer.
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
Monica [59]
4 years ago
14

A 25-W compact fluorescent lightbulb (CFL) produces the light equivalent of a 100-W incandescent bulb. The population of North A

merica is estimated to be about 305 million. Estimate the amount of coal needed to light one 100-W incandescent lightbulb for each person for one year and the amount of coal that would be saved if each incandescent bulb were replaced with a CFL. Assume the coal has a NHV of 28.5 MJ · kg−1 and the power plants are 33% efficient.
Engineering
1 answer:
wariber [46]4 years ago
8 0

Answer:

Coal required is 101 Teragram/year.

Coal saved is 25.25 Teragram/year.

Explanation:

1 Teragram is exactly 1000000000 kilograms.

You might be interested in
2. How many amperes of current will flow through a circuit that has 3 ohms of resistance if
Dmitriy789 [7]

Answer:

4A

Explanation:

From Ohms law ;

R= V/I where R is resistance, V is voltage and I is current

Given that;

R= 3Ω

V= 12

Using the values in the formula as;

R= V/I

3=12/I

I= 12/3

I= 4 A

4 0
3 years ago
std::string x[n]; int mode1count = 0; // msft int mode2count = 0; // appl int mode3count = 0; // csco int mode4count = 0; // imb
rosijanka [135]

Answer:

std::string x[n];

int mode1count = 0; // msft

int mode2count = 0; // appl

int mode3count = 0; // csco

int mode4count = 0; // imb

int i;

for(i = 0; i < n; ++i) // Set the array of strings

x[i] = modeList[i];

for(i = 0; i < n; ++i)

{

if(x[i] == "msft")

++mode1count;

else if(x[i] == "appl")

++mode2count;

else if(x[i] == "csco")

++mode3count;

else if(x[i] == "imb")

++mode4count;

}

Explanation:

It is important to ensure that there is adequate space and necessary punctuation when developing codes and programming to avoid getting error messages when running the codes. In this problem, the codes required are shown in the answer section. The codes are properly writing and arranged.

7 0
3 years ago
engineering controls are devices such as self sheathing needles and sharps containers to block or eliminate the sharp risk. true
Paladinen [302]

Answer:

yes

Explanation:

The 1991 standard states, "engineering and work practice controls shall be used to eliminate or minimize employee exposure." The revision defines Engineering Controls as "controls (e.g., sharps disposal containers, self-sheathing needles, safer medical devices, such as sharps with engineered sharps injury protections ...

6 0
3 years ago
Write the definition of a function printLarger, which has two int parameters and returns nothing. The function prints the larger
vredina [299]

Answer:

  1. #include <iostream>
  2. using namespace std;
  3. void printLarger(int a, int b){
  4.    
  5.    if(a > b){
  6.        cout<<a;
  7.    }else{
  8.        cout<<b;
  9.    }
  10. }
  11. int main()
  12. {
  13.    printLarger(4, 5);
  14.    return 0;
  15. }

Explanation:

The solution code is written in C++.

Firstly define a function printLarger that has two parameters, a and b with both of them are integer type (Line 5). In the function, create an if condition to check if a bigger than b, print a to terminal (Line 7-8). Otherwise print b (Line 9-10).

In the main program, test the function by passing 4 and 5 as arguments (Line 16) and we shall get 5 printed.  

7 0
4 years ago
1. What are hand tools ? *
Mamont248 [21]

Answer:

Microsoft Word - Hand tools SON

8 0
3 years ago
Other questions:
  • A stainless steel cap covers a drain in the dolphin tank which is 15 ft deep. The diameter of the hole is 3 in and the cap and w
    12·1 answer
  • A 30 mm thick AISI 1020 steel plate is sandwiched between two 10 mm thick 2024-T3 aluminum plates and compressed with a bolt and
    9·1 answer
  • A horizontal curve on a two lane highway (one lane per direction) has its PC at station 123+70 and its PI at station 130+90. The
    6·1 answer
  • A cylindrical specimen of brass that has a diameter of 20 mm, a tensile modulus of 110 GPa, and a Poisson’s ratio of 0.35 is pul
    15·2 answers
  • Air at 80 °F is to flow through a 72 ft diameter pipe at an average velocity of 34 ft/s . What diameter pipe should be used to
    10·2 answers
  • N2 flows through an insulated horizontal tube at steady state. With an inlet temperature of 150°C and a velocity change from 2 m
    11·1 answer
  • The steam requirements of a manufacturing facility are being met by a boiler whose rated heat input is 5.5 x 3^106 Btu/h. The co
    8·1 answer
  • Whats the thing in the picture? Its a part of a computer.
    14·2 answers
  • Replace the black box portion of the circuit with the Norton's equivalent circuit. ______ for the load can now be calculated usi
    12·1 answer
  • How many watts are consumed in a circuit having a power factor of 0. 2 if the input is 100 vac at 4 amperes?.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!