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emmasim [6.3K]
3 years ago
13

Will mark brainliest.

Physics
1 answer:
egoroff_w [7]3 years ago
6 0

Answer:

pls can you get a clearer image, then u can report back to me

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made up of more than one cell.

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A bus covers 10 km in 7 minutes. Find the speed of the bus in km/h
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  • L=8m
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\\ \bull\tt\longmapsto Volume=LBH

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1270.64\ \text{J}

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m = Mass of object = \dfrac{mg}{g}

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v = Final velocity = 15 m/s

u = Initial velocity = 0

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\theta = Angle of slope = 30^{\circ}

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The force balance of the system is

\dfrac{1}{2}m(v^2-u^2)=(mg\sin\theta-f)d\\\Rightarrow \dfrac{1}{2}mv^2=mg\sin\theta d-fd\\\Rightarrow fd=mg\sin\theta d-\dfrac{1}{2}mv^2\\\Rightarrow fd=20\times \sin 30^{\circ}\times 150-\dfrac{1}{2}\times \dfrac{20}{9.81}\times 15^2\\\Rightarrow fd=1270.64\ \text{J}

The work done against friction is 1270.64\ \text{J}.

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Place a small object on the number line below at the position marked zero. Draw a circle around the object. Mark the center of t
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