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Svetlanka [38]
3 years ago
5

What is the kinetic energy of a 478 kg object that is moving with a speed of 15m/s

Chemistry
1 answer:
AVprozaik [17]3 years ago
8 0

Answer:Kinetic energy = (1/2)*mass*velocity^2

KE = (1/2)mv^2

KE = (1/2)(478)(15)^2

KE = 53775J

Explanation:

Kinetic energy = (1/2)*mass*velocity^2

KE = (1/2)mv^2

KE = (1/2)(478)(15)^2

KE = 53775J

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a block of iron has the dimensions of 3.00 cm x 3.00 cm x 3.00 cm. it has a mass of 213 g. what is its density? a. 638 g/cm3 b.
Juliette [100K]
Volume = 3 cm × 3cm × 3cm
             =  27 cm ³

Mass  =  213 g

Density  =  \frac{MASS}{VOLUME}
 
              = <span>\frac{213 g}{27 cm ^{3} }
</span> 
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Thus answer is D.</span>
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3 years ago
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aleksandrvk [35]
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3 0
2 years ago
The concentration of pb2+ in a solution saturated with pbbr2(s) is 2.14 ✕ 10-2 m. calculate ksp for pbbr2.
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Concentration = 2.14 âś• 10-2 m 
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Ksp = [Pb][Br]^2 = 2.14 âś• 10-2 x (4.28 x 10^-2 )^2 = 39.20 x 10^-6 
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3 0
3 years ago
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5 0
3 years ago
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LUCKY_DIMON [66]
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3 years ago
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