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iragen [17]
3 years ago
6

Form conise note on heat energy specific heat application evaporation boiling sublimation relative humidity and dew point

Physics
1 answer:
weqwewe [10]3 years ago
8 0
The answer is letter a

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A dock worker loading crates on a ship finds that a 27 kg crate, initially at rest on a horizontal surface, requires a 80 N hori
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Answer:0.302

Explanation:

Given

mass of crate m=27 kg

Force required to set crate in motion is 80 N

Once the crate is set  in motion 56 N is require to move it with constant velocity

i.e. 80 N is the amount of force needed to just overcome static friction and 56 is the kinetic friction force

thus  

f_s(static\ friction)=\mu \cdot N

where \muis the coefficient of static friction and N is Normal reaction

N=mg

f_s=\mu mg

\mu mg=80

\mu =\frac{80}{27\times 9.8}

\mu =0.302

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Which number is larger value : 5.6*10^23 or 8.9*10^6<br><br> Need Help
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