subject
Physics, 31.08.2019 02:30 pearljammarow6ujs

As a result of radioactive decay, heat is generated uniformly throughout the interior of the earth at a rate of around 30 watts per cubic kilometer. (a watt is a rate of heat production.) the heat then fows to the earth's surface where it is lost to space. let f(z, y, 2) denote the rate of flow of heat measured in watts per square kilometer. by definition, the fu of facross a surface is the quantity of heat flowing through the surface per unit of time. (a) suppose that the actual heat generation is 30w /kin3 what is the value of div f div f (include units.) (b) assume the heat tlows outward symmetrically. verify that f-or where r-zi + yj + zk and α is a suitable constant. satisfies the given conditions. find a include units) c) let t z y z denote the temperature inside the earth. heat ows according to the equation f sphere with radius 6400 km and surface temperature 20°c, what is the temperature at the center? -k grad t where kis a constant. lf t s in c then k 30 000 с/km assuming the earth is a (degrees c)

ansver
Answers: 1
Show answers

Another question on Physics

question
Physics, 22.06.2019 02:30
What are the factors that affect the resistance of a wire?
Answers: 1
Answer
question
Physics, 22.06.2019 03:00
The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f
Answers: 2
Answer
question
Physics, 22.06.2019 08:30
Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?
Answers: 3
Answer
question
Physics, 22.06.2019 10:00
Which atomic model was proposed as a result of j. j. thomson’s work?
Answers: 1
Answer
You know the right answer?
As a result of radioactive decay, heat is generated uniformly throughout the interior of the earth a...
Questions
question
English, 03.08.2019 02:00
What does an aside and the chorus have in common?...
question
English, 03.08.2019 02:00
Angus's comment about macbeth, now does feel his/title hang loose about him, like a giant's robe/ upon a dwarfish thief ( v. ii.20-22), is an example...
question
Biology, 03.08.2019 02:00
Explain how scientists use recombinant dna technology to produce the drug insulin. be sure to also explain why a gene form one organism can be express...
question
Mathematics, 03.08.2019 02:00
For circle o, and . in the figure, and have measures equal to 35°....
question
History, 03.08.2019 02:00
Why did french women not get the vote until 1946?...
question
English, 03.08.2019 02:00
If [the animals] could speak, they would plead for a better life. it is wrong not to give them one. this passage represents what type of support? a i...
question
Mathematics, 03.08.2019 02:00
What is slope is 5, and (-9,0) is on the line is standard form...
question
English, 03.08.2019 02:00
In the following statement, “after dinner dee (wangero) went to the trunk at the foot of my bed and started rifling through it” the author’s word choi...
question
Mathematics, 03.08.2019 02:00
What is the 9th term of this geometric sequence? 7,28,112,448...
question
History, 03.08.2019 02:00
In 1903, the united states fight for independence from columbia....
question
Spanish, 03.08.2019 02:00
Los pesos from different spanish speaking countries are (3 points) question 15 options: 1) the same 2) different 3) equal in value to the euro 4) eq...
question
Geography, 03.08.2019 02:00
Which angiosperm feature absorbs water and nutrients from the ground...
question
Mathematics, 03.08.2019 02:00
Asystem of linear equations is graphed. which ordered pair is the best estimate for the solution to the system? (12, 0) (1, 1) (12, 1) (13, 0) a syst...
question
History, 03.08.2019 02:00
The ming korea resist the a. japanese b. portuguese c. mongols d. manchus...
question
Computers and Technology, 03.08.2019 02:00
You would check the automatic transmission fluid at normal operating temperature with the engine running and the transmission in a. third gear. b. fi...
question
Mathematics, 03.08.2019 02:00
Apair of parallel lines is cut by a transversal what is the measure of angle x
question
Mathematics, 03.08.2019 02:00
Graph the system of equations on graph paper. {4x+3y=122x+3y=−6 which statements are true about the solution to the system of equations? select each...
question
Spanish, 03.08.2019 02:00
Elisa: hola juana. ¿tú conoces a mis primos? juana: no, no conozco. a. lo c. los b. la d. las...
question
English, 03.08.2019 02:00
Caithness says meet we the medicine of the sickly weal. medicine metaphorically refers to whom?...
question
Arts, 03.08.2019 02:00
In the salt shaker dance, what move brings the fists up to the chin and the elbows out as you bring your arms up and down to the beat?...
More questions: Physics Another questions
Questions on the website: 13722360
See results (0)