Question: The heaters in a spacecraft suddenly fail. Heat is lost by radiation at the rate of 100 kJ/h and the electric instruments generate 75 kJ/h.

The heaters in a spacecraft suddenly fail. Heat is lost by radiation at the rate of 100 kJ/h and the electric instruments generate 75 kJ/h. Initially, the air is at 100 kPa, 25°C with a volume of 10 m3. How long will it take to reach an air temperature of −20°C?

Step by Step Solution

★★★★★

3.41 Rating (154 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

Qel CM Air CV rad Frame E Qel Qrad Qnet PV1 RT1 dM ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

E-ME-T (532).docx

120 KBs Word File

Students Have Also Explored These Related Mechanical Engineering Questions!

How long will it take to produce 1.00 103 kg of magnesium metal by the electrolysis of molten magnesium chloride using a current of 5.00 104 A?

How long will it take an RESP to grow to $200,000, if the plan owner contributes $250 at the end of each month and the plan earns: a. 8% compounded monthly? b. 8% compounded quarterly? c. 8%...

To the nearest month, how long will it take an investment to increase in value by 200% if it earns 7.5% compounded semiannually?

The heaters in a spacecraft suddenly fail. Heat is lost by radiation at the rate of 100 kJ/h, and the electric instruments generate 75 kJ/h. Initially, the air is at 100 kPa, 25C with a volume of 10...

The heaters in a spacecraft suddenly fail. Heat is lost by radiation at the rate of 100kJ/h, and the electric instruments generate 75 kJ/h. Initially, the air is at 100 kPa, 25C 0with a...

ANSWER ALL QUESTIONS. WILL GIVE A GOOD RATING FOR A CORRECT ANSWERS ONLY 2-35E A spring whose spring constant is 200 lbf/in has an initial force of 100 lbf acting on it. Determine the work, in Btu,...

please can you please help me with this case in order for me to get prepared for my midterm. this is not a homework, its a case given by the professor for us to get ready for the upcoming exam...

Two major themes from the introduction to module 4 are "Project Management" and "Managing Risk." Discuss, in depth, your analysis of the company's actions in relation to the concepts of these two...

For her daughter's university education, Carla Hackl has invested an inheritance in a fund paying 9.2% compounded quarterly. If ordinary annuity payments of $4750.00 per month are to be made out of...

Suppose you short-sell 100 shares of IBM, now selling at $200 per share. a What is your maximum possible loss? b. What happens to the maximum loss if you simultaneously place a stop-buy order at $210?

a. Estimate 2 with 90% confidence given that n = 15 and s2 = 12. b. Repeat part (a) with n = 30. c. What is the effect of increasing the sample size?

Complete all the yellow boxes. Use the T accounts in the ledger area as your chart of accounts so your account names should be from the ledger. Order of the accounts In the trial balance matters. The...

Match each of the key terms above with the definition that best fits it. Paper prototype ____ A usability dimension concerned with how difficult it is for the user to perform a task for the first...

Earleton Manufacturing Company has $2 bilion in sales and 5400,000,000 in fixed assets. Currently, the company's fixed ascets are operating at 65 ts of capacity. The data has been collected in the...

QUESTION 15 Cameron is going to receive an annuity for 30 years of $33.951, and Kennedy is going to receive a perpetuity of that same amount. If the appropriate discount rate is 6%, how much more are...

Can you help me figure this out? Question 12 2 / 3 pts 12. On a multiple choice test with 5 possible options for each question (a, b, c, d, and e), what is the probability that a guess on one...