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Lady_Fox [76]
3 years ago
9

When reading a buret, where is the initial and final volumes taken from? The top (where the zero is) or the bottom?. If the bure

t is completely full, is my initial volume 0?
Physics
1 answer:
liubo4ka [24]3 years ago
5 0
<span>When reading a buret, the initial reading should be taken from the top of the glassware and the final volume should still taken at the top. If the buret is completely, the initial volume for most buret would be zero. though, there are some where their initial starts at 50 decreasing to zero.</span>
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If sunlight begins to warm a frozen lake, the atoms in the lakes frozen water will begin to move faster. True of False?
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If a rock were dropped from a building it would hit the ground with a certain kinetic energy and velocity. If it fell from a roo
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Answer:

no

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3 years ago
How far will a free falling object fall in 8.7 secs if it started from rest? Remember acceleration is negative for free fall. Do
sleet_krkn [62]

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h~=371.26m

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x = ut +  \frac{1}{2} a {t}^{2}

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4 0
3 years ago
A child of mass 27 kg swings at the end of an elastic cord. At the bottom of the swing, the child's velocity is horizontal, and
snow_tiger [21]

Answer:

The magnitude of the rate of change of the child's momentum is 794.11 N.

Explanation:

Given that,

Mass of child = 27 kg

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There is a rate of change of the perpendicular component of momentum.

Centripetal force acts always towards the center.

We need to calculate the magnitude of the rate of change of the child's momentum

Using formula of momentum

\dfrac{dp}{dt}=F

\dfrac{dP}{dt}=\dfrac{mv^2}{r}

Put the value into the formula

\dfrac{dP}{dt}=\dfrac{27\times10^2}{3.40}

\dfrac{dP}{dt}=794.11\ N

Hence, The magnitude of the rate of change of the child's momentum is 794.11 N.

7 0
3 years ago
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