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Jlenok [28]
3 years ago
12

Please help, thank you

Physics
2 answers:
wlad13 [49]3 years ago
5 0

it might be D but i'm not sure. i hope you find your answer ! :)

IceJOKER [234]3 years ago
5 0
Yeah I’m pretty sure it’s the last one x
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Put these into the correct sequence: A) Ride flies into space for the first time; B) Ride serves on the Challenger accident boar
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I think it is A, B, C. :)
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When driving on roads that may be slippery: A. Always drive at the maximum speed limit. B. Use cruise control to maintain a stea
erik [133]

When driving on roads that may be slippery, do not make any sudden changes in speed or direction. Option D is correct.

<h3 /><h3>What is a slippery surface?</h3>

The slick road sign serves as a warning.  When the road is wet or ice, drivers should use extra caution and reduce their speed. When the weather is bad, avoid making any rapid changes in direction.

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7 0
1 year ago
Carbon is allowed to diffuse through a steel plate 15 mm thick. The concentrations of carbon at the two faces are 0.65 and 0.30
beks73 [17]

Answer:

T=575.16K

Explanation:

To solve the problem we proceed to use the 1 law of diffusion of flow,

Here,

J=-D\frac{\Delta C}{\Delta x}

\Delta C is the rate in concentration

\Delta xis the rate in thickness

D is the diffusion coefficient, where,

D= D_0 exp(\frac{Q_d}{RT})

Replacing D in the first law,

J=-(D_0 exp(\frac{-Q_D}{RT}))\frac{\Delta }{\Delta x}

clearing T,

T=\frac{Q_d}{R*ln(\frac{J*\Delta x}{D_0*\Delta C})}

Replacing our values

T=-\frac{80000}{8.31*ln(\frac{(6.2*10^{-7})(-15*10^{-3})}{(1.43*10^{-9})(0.65-0.30)})}

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3 years ago
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7. All of the following descriptions are true about descriptive method of research except one:
kolezko [41]

Answer:

c

Explanation:

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