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
Charra [1.4K]
2 years ago
15

Calculate a rate of cooling down of air from 80 C to 5C Show calculation. Give an answer in cubic meters per minute and cfm.

Physics
1 answer:
antoniya [11.8K]2 years ago
3 0

Explanation:

Given that,

Rate of cooling of air

Initial temperature= 80°C

Final temperature = 5°C

We need to calculate

Using newton's law of cooling

\dfrac{dT}{dt}=c(T-T_{0})

\dfrac{dT}{dt}=c(\dfrac{T_{1}+T_{2}}{2}-T_{0})

Where, dT=T_{1}-T_{2}

Here, T =\dfrac{T_{1}+T_{2}}{2}

T_{0} = 25°C  (surrounding temperature)

dt = 1 minute

\dfrac{dT}{dt}=c(\dfrac{T_{1}+T_{2}}{2}-T_{0})

Put the value into the formula

\dfrac{80-5}{1}=c(\dfrac{85}{2}-25)

c=\dfrac{75}{17.5}

c=4.285\ cubic\ meter/minute

Hence, This is the required answer.

You might be interested in
5 grams is thes than greater than or equal too 508mg
guapka [62]

Answer:

yes 5 is greater

Explanation:

7 0
3 years ago
Read 2 more answers
A small bolt with a mass of 41.0 g sits on top of a piston. The piston is undergoing simple harmonic motion in the vertical dire
EleoNora [17]

Answer:

Amplitude will be equal to 0.091 m

Explanation:

Given mass of the slits = 41 gram = 0.041 kg

Frequency f = 1.65 Hz

So angular frequency \omega =2\pi f=2\times 3.14\times 1.65=10.362rad/sec

Angular frequency is equal to \omega =\sqrt{\frac{k}{m}}

10.362 =\sqrt{\frac{k}{0.041}}

Squaring both side

107.371 ={\frac{k}{0.041}}

k = 4.40 N/m

For vertical osculation

mg=kA

0.041\times 9.8=4.40\times A

A = 0.091 m

So amplitude will be equal to 0.0391 m

8 0
3 years ago
Explain how the Indian and Asian plates met and the kind of boundary that formed on their meeting. Describe what happened as a r
ANEK [815]

Answer:

This immense mountain range began to form between 40 and 50 million years ago, when two large landmasses, India and Eurasia, driven by plate movement, collided. ... Artist's conception of the 6,000-km-plus northward journey of the "India" landmass (Indian Plate) before its collision with Asia (Eurasian Plate).

Explanation:

4 0
2 years ago
Read 2 more answers
Briefly explain what water is.in your explanation include what a water molecule is,what elements makes up water and draw a molec
djyliett [7]
Water is a naturally abundant polar solvent that is essential for life as we know it. It consists of two hydrogen atoms covelently bonded to oxygen making a H-O bond angle of 120 degrees.

8 0
3 years ago
Read 2 more answers
Describe how a wheel and axle work?
andrezito [222]

A weally works when you pull something and a axle is something that you can push

Explanation:

I hope this helps

7 0
2 years ago
Other questions:
  • The lithosphere consists of _______. select one:
    7·1 answer
  • How long would it take for Sofia to walk 300 meters if she is walking at a velocity of 2.5 m/s?
    11·2 answers
  • How does volcanic ash in earth's atmosphere affect solar radiation?
    8·2 answers
  • An electric light is plugged into a 120-V outlet. If the current in the bulb is 0.50 A, how much electrical energy does the bulb
    13·1 answer
  • How are the fiducial points of the Celsius and Fahrenheit scales similar?
    14·1 answer
  • What unbalanced force is needed to give a 976 kg vehicle an acceleration of 2.50 m/s2? ASAP
    11·1 answer
  • Why are special techniques and extinguishing agents are required to fight combustible metals fires?
    11·1 answer
  • Please help!! I'll name you brainliest!!
    13·1 answer
  • UGH PLSSSS HELP WILL GIVE BRAINLIEST, AND 20 POINTS
    10·1 answer
  • Please Help. Mary and Steve played cribbage all day, and that night, when Mary slept, she dreamt of new ways to win the game.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!