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8090 [49]
3 years ago
6

A rock weighing 2 newtons was lifted 3 meters. how much work was done

Chemistry
1 answer:
goblinko [34]3 years ago
3 0

Answer: The work done to lift the 2 N rock was 6 Joules.

Explanation:

Weight of the Rock = 2 Newtons

So, the force required to lift this rock will be equal to its weight or greater than its weight

Minimum force required to lift the Rock = 2 N

Displacement of the Rock when force was applied = 3 m,

Work Done: It is defined as product of force applied to the object into displacement of the object.

\text{Work done}=Force\times Displacement=2 N\times 3 m=6 Nm=6 Joules

The work done to lift the 2 N rock was 6 Joules.

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SOMEONE PLS HELP
Gekata [30.6K]

Answer:

<h2>464.85 mL</h2>

Explanation:

The new volume can be found by using the formula for Boyle's law which is

P_1V_1 = P_2V_2

Since we're finding the new volume

V_2 =  \frac{P_1V_1}{P_2}  \\

100.7 kPa = 100,700 Pa

95.1 kPa = 95,100 Pa

We have

V_2 =  \frac{100700 \times 439}{95100}  =  \frac{44207300}{95100}  \\  = 464.8506...

We have the final answer as

<h3>464.85 mL</h3>

Hope this helps you

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4 Identify Give an example of a physical change and an example of a chemical change.
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Answer:

Answer below

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Google’s definition

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