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
sladkih [1.3K]
3 years ago
12

A heat recovery system​ (HRS) is used to conserve heat from the surroundings and supply it to the Mars Rover. The HRS fluid loop

s use Freon as the working fluid. The instrumentation must be kept as a temperature greater than −67 degrees Fahrenheit​ [°F] to avoid damage.
The temperature in the area of Mars where the rover is exploring is 189 kelvins​ [K]. If the system must remove 47.4
British Thermal Units​ [BTU] of​ energy, what volume of Freon is needed in units of liters​ [L]?

Some facts about​ Freon:
The specific heat of Freon is 74
joules per mole kelvin J/(mol °K)]
The specific gravity of Freon is 1.49
The molecular mass of Freon is 120 grams per mole​ [g/mol]
Engineering
1 answer:
blagie [28]3 years ago
7 0

Answer:

0.304 L of Freon is needed

Explanation:

Q = mCT

Q is quantity of energy that must be removed = 47 BTU = 47×1055.06 = 49587.82 J

C is specific heat of Freon = 74 J/mol.K = 74 J/mol.K × 1 mol/120 g = 0.617 J/g.K

T is temperature in the area of Mars = 189 K

m = Q/CT = 49587.82/(0.617×189) = 452.23 g = 452.24/1000 = 0.45223 kg

Density of Freon = specific gravity of Freon × density of water = 1.49 × 1000 kg/m^3 = 1490 kg/m^3

Volume of Freon = mass/density = 0.45223/1490 = 0.000304 m^3 = 0.000304×1000 = 0.304 L

You might be interested in
The _______ is a tendency to assume that people with one positive attribute (e.g., who are physically attractive) also have othe
morpeh [17]

Answer:

Halo effect

Explanation:

In psychology, halo effect is defined as the tendency to assume that people with one positive attribute (e.g. physical attractiveness) also have other positive traits. Mere Exposure is the tendency to feel more positively toward a stimulus as a result of repeated exposure to it.

7 0
3 years ago
When adding two 8 bit binary numbers, which of the following statements is true?
diamong [38]

Answer:

The result might require 9 bits to store

4 0
2 years ago
Esma and hasan are putting the finishing touches on their model for a tiny chip-based energy source to power their lighting syst
Bas_tet [7]

The phase of the engineering design process which should be completed next is to test their work and is denoted as option C.

<h3>What is Engineering design?</h3>

These are the series of steps and techniques which are done by individuals in the making of functional product and services.This employs the use of scientific methods and also ensures an easier living for different individuals.

The first stage involves identifying the problem and then building a prototype through the use of different materials. This is then tested before the final finishing work is done to ensure the parts are properly placed before they are moved for evaluation by other people.

Read more about Engineering design here brainly.com/question/411733

#SPJ1

7 0
2 years ago
Consider the 'scope trace showing the input signal to an rc filter (the one having the larger amplitude) and the output of the f
yulyashka [42]

The corner frequency of this filter in hz is Directly switched the documents to one-of-a-kind Cloud Multi-Regional Storage bucket places in US, EU, and Asia the usage of APIs over HTTP(S).

<h3>What is Multi-Regional Storage?</h3>

It is geo-redundant, this means that Cloud Storage shops your information redundantly in as a minimum geographic location separated via way of means of as a minimum one hundred miles in the multi-local vicinity of the bucket.

Multi-Regional Storage is suitable for storing information this is often accessed ("hot" objects), along with serving internet site content, interactive workloads, or information helping cell and gaming applications. Multi-Regional Storage information has the maximum availability as compared to different garage classes.

Read more about the amplitude:

brainly.com/question/413740

#SPJ1

6 0
2 years ago
Driving alone without the distraction from passengers reduces the risks you face in driving.
vredina [299]

Driving alone without the distraction from passengers reduces the risks you face in driving.

True

3 0
2 years ago
Other questions:
  • The components of an electronic system dissipating 90 W are located in a 1-m-long circular horizontal duct of 15-cm diameter. Th
    11·1 answer
  • You receive the bill for servicing your diesel engined car. As a good engineer you immediately notice that one of the items on b
    7·1 answer
  • Coils of various dimensions designed to introduce specified amounts of inductance into a circuit are called (a) semiconductors (
    11·1 answer
  • Here u go vagdhf dis day did. Du video ioi Hi I gotta go to do something fun to do something that would you want to me see you l
    15·1 answer
  • 15. A cold-chamber die-casting machine operates automatically, supported by two industrial robots.The machine produces two zinc
    9·2 answers
  • (Tacoma Bridge Failure) Are There Relevant Ethical Issues Or Just 20-20 Hindsight?
    10·1 answer
  • 5. Identify the pros and cons of<br> manufactured siding.
    12·1 answer
  • The intercept of the CML is the origin while the intercept of the SML is RF CML consists of efficient portfolios, while the SML
    12·1 answer
  • Fill in the correct answer.
    13·1 answer
  • Select the best answer for the question
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!