PLEASE HELP WORTH 40 POINTS CORRECT ANSWER GETS BRAINLIEST!!!! The temperatures on the inside and outside surface of a wall are 20°C and 5°C respectively. The wall is 8 m wide, 4 m high, and 0.2 m thick. The thermal conductivity is 0.3 W/m•K. The heat flux through the wall is negative ____ W/m2. Use two significant figures in your answer.

2 answers
Question:

PLEASE HELP WORTH 40 POINTS CORRECT ANSWER GETS BRAINLIEST!!!!
The temperatures on the inside and outside surface of a wall are 20°C and 5°C respectively. The wall is 8 m wide, 4 m high, and 0.2 m thick. The thermal conductivity is 0.3 W/m•K.
The heat flux through the wall is negative ____ W/m2. Use two significant figures in your answer.

Answers

Answer:720WExplanation:k= 0.3 W/m KΔT = 20 – 5 = 15 ºCS = 8 \times 4 = 32 \;m^2S=8×4=32m 2 A = 0.2 mq = \frac{ΔT}{A/kS} \\ = \frac{15}{0.2/(0.3 \times 32)} \\ = 720 \;Wq= A/kSΔT​ = 0.2/(0.3×32)15​ =720WAnswer: 720 W

Fatmagul neushe mode

Similar Solved Questions

1 answer

Suppose Tommy walks from his home at (0, 0) to the mall at (0, 8), and then walks to a movie theater at (7, 8). After leaving the theater Tommy walks to the store at (7, 0) before returning home. If each grid square represents one block, how many blocks does he walk?

Suppose Tommy walks from his home at (0, 0) to the mall at (0, 8), and then walks to a movie theater at (7, 8). After leaving the theater Tommy walks to the store at (7, 0) before returning home. If each grid square represents one block, how many blocks does he walk?...
1 answer

H(x)=3/4 x help please

H(x)=3/4 x help please...
1 answer

If the reactants are 10 kg what is the mass of the products

if the reactants are 10 kg what is the mass of the products...
1 answer

How do you shower with aquagenic urticaria

How do you shower with aquagenic urticaria...
1 answer

1. How do members of a traditional economic system make economic decisions? a. They talk about their ideas. b. They follow the ways of their ancestors. C. They talk to a judge. d. They copy the ideas of other societies.

1. How do members of a traditional economic system make economic decisions? a. They talk about their ideas. b. They follow the ways of their ancestors. C. They talk to a judge. d. They copy the ideas of other societies....
2 answers

A significant area of disagreement among delegates at the Constitutional Convention was

A significant area of disagreement among delegates at the Constitutional Convention was...
2 answers

What were the results of the decision in the Dred Scott case? Check all that apply. The Missouri Compromise was declared constitutional. Congress was not allowed to ban slavery in the territories. African Americans were not allowed to become US citizens. Northerners feared that slavery would become legal across the nation. Southerners feared that the practice of slavery would come to an end.

What were the results of the decision in the Dred Scott case? Check all that apply. The Missouri Compromise was declared constitutional. Congress was not allowed to ban slavery in the territories. African Americans were not allowed to become US citizens. Northerners feared that slavery would become...
1 answer

A company's foreign subsidiary operation maintains its financial statements in the local currency. The foreign operation's capital accounts would be translated to the functional currency of the reporting entity using which of the following rates? Your Answer: a. Historical exchange rate. b. Functional exchange rate. c. Weighted-average exchange rate. d. Current exchange rate at the balance sheet date.

A company's foreign subsidiary operation maintains its financial statements in the local currency. The foreign operation's capital accounts would be translated to the functional currency of the reporting entity using which of the following rates? Your Answer: a. Historical exchange rate. b. Function...
1 answer

A book store recieves a shipment of 80 paperback books. the shipment includes two types of books: mysteries and classic novels. the mysteries cost $6 each and the classic novels cost $8 each. if the bill for the shipment is $530, write a system of equations that can be used to calculate how many type of book was in the shipment

a book store recieves a shipment of 80 paperback books. the shipment includes two types of books: mysteries and classic novels. the mysteries cost $6 each and the classic novels cost $8 each. if the bill for the shipment is $530, write a system of equations that can be used to calculate how many typ...
3 answers

What is 27.88 ÷8.2 work?

what is 27.88 ÷8.2 work?...
2 answers

Which organelles are found in both plant and animal cells? a. ribosomes and lysosomes b. mitochondria and nucleus c. nucleus and cell wall d. chloroplasts and ribosomes

Which organelles are found in both plant and animal cells? a. ribosomes and lysosomes b. mitochondria and nucleus c. nucleus and cell wall d. chloroplasts and ribosomes...
1 answer

What is 0.000000591 as a scientific notation

What is 0.000000591 as a scientific notation...
2 answers

What is an inorganic chemical? A. A chemical that contains carbon atoms B. A chemical that does not take part in reactions C.A chemical that makes up living things D.A chemical that is not from living things I'd appreciate anyone's help

What is an inorganic chemical? A. A chemical that contains carbon atoms B. A chemical that does not take part in reactions C.A chemical that makes up living things D.A chemical that is not from living things I'd appreciate anyone's help...
1 answer

A group of 33 people attended a ball game. There were twice as many children as adults in the group. Set up a system of equations that represents the number of adults and children who attended the game and solve the system to find the number of adults and the number of children who were in the group.

A group of 33 people attended a ball game. There were twice as many children as adults in the group. Set up a system of equations that represents the number of adults and children who attended the game and solve the system to find the number of adults and the number of children who were in the group...
1 answer

Plz help Solve the right triangle that has legs 3m and 4m.

plz help Solve the right triangle that has legs 3m and 4m....
2 answers

A store has 300 televisions on order, and 80% are high definition, how many televisions on order are high difinition?

A store has 300 televisions on order, and 80% are high definition, how many televisions on order are high difinition?...
1 answer

If you wanted to conduct an experiment to determine the temperature at which milk freezes compared to other liquids, such as water or juice, explain the steps you would need to make it a fair test

If you wanted to conduct an experiment to determine the temperature at which milk freezes compared to other liquids, such as water or juice, explain the steps you would need to make it a fair test...
1 answer

The desire to unify the material and the spiritual worlds has been a goal of __________ from the earliest times.

The desire to unify the material and the spiritual worlds has been a goal of __________ from the earliest times....
1 answer

Which of the following is the best explanation for the areas without vegetation

Which of the following is the best explanation for the areas without vegetation...

-- 0.014996--