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Blizzard [7]
3 years ago
10

1. A bag dropped from a helicopter falls with an acceleration of 9.8m/s2. What is its velocity after 5s?

Physics
1 answer:
Tanzania [10]3 years ago
5 0

Answer:

The answer is 49m/s.

Explanation:

Given,

acceleration (a) =9.8m/s^2

initial velocity (u)=0 (as it was in rest condition in helicopter)

time (t) =5 s

now, final velocity (v) after 5s =?

we have,

a =  \frac{v - u}{t}

or \: 9.8 =  \frac{v - 0}{5}

or, v = 49m/s

Therefore, the velocity after 5s is 49m/s.

<em><u>Hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em>

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Sunny_sXe [5.5K]

Answer:

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Explanation:

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Mathematically, entropy is expressed as

ΔS = ΔH/T....................... Equation 1

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<em>Substituting these values into equation 1,</em>

<em>ΔS =2.26x 10⁶/373</em>

ΔS = 6.059 x 10³ J/K.mol

Therefore the entropy change of the sample of water =  6.059 x 10³ J/K.mol

7 0
4 years ago
The Earth's electric field creates a potential that increases 100 V for every meter of altitude. If an object of charge 4.5 mC a
castortr0y [4]

Answer:

The final kinetic energy is  K =  1.1 \ J

Explanation:

From the question we are told that

    The electric field is  E =  100 \ V/m

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     The distance moved by the object is d =  1.0 \ m

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8 0
3 years ago
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True.

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A copper wire is still  a copper wire when it is conducting electricity. Like wise, an aluminum rod is still an aluminum rod when heated. It is conducting heat but the heat does not change it, it is still  an aluminum rod during the whole process.

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MArishka [77]
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Answer:

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