3 years ago

How does the law of the conservation of mass relate to "You can't get something for nothing

1 answer:

8 0

You can't get something from nothing is practically stating the law. The law means states that energy can't be created or destroyed, in other words, it's constant. So in saying so, you truly can't get something from nothing

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malfutka [58]

Here Change in Kinetic Energy = Work Done by Friction

Therefore, substituting the given values to the equation, we get

0.5 * m * (vFinal^2 - vInitial^2) = µ m g * d

Therefore

0.5*( 5.90^2 - Vfinal^2 ) = 0.100*9.8*2.10

Therefore

vfinal = 5.54 m/sec

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2 years ago

Use the dot product to find the magnitude of u if u = 6i - 3j

LuckyWell [14K]

Vector u :
u = 6 i - 3 j
The magnitude of vector u :
| u | = $\sqrt{6 ^{2}+(-3) ^{2} } = \sqrt{36+9}= \\ \sqrt{45}= \sqrt{9*5}=3 \sqrt{5}$
Answer:
The magnitude of vector u is 3√5.

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2 years ago

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saul85 [17]

Answer:

Explanation:

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2 years ago

Calculate kinetic energy in joules of 1500 kg car moving 29m/s

Anon25 [30]

$Kinetic\ energy=\frac{1}{2}mass*velocity^2\\\\
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2 years ago

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timofeeve [1]

Answer:

1. False

2. True

3. True

4. True

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2 years ago

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