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Sergeeva-Olga [200]

2 years ago

5

A pharmacist weighed 475 mg of a substance on a balance of dubious accuracy. When checked on a balance of high accuracy, the wei

ght was found to be 445 mg. Calculate the percentage error in the first weighing.

1 answer:

IceJOKER [234]2 years ago

3 0

Answer: 6.416%

Step-by-step explanation:

The percentage error formula is given by :-

$\%\text{error}=\dfrac{|\text{Estimate-Actual}|}{\text{Actual}}\times100$

Given : The estimated weight of a substance = 475 mg

The actual weight of the substance = 445 mg

Then,

$\%\text{error}=\dfrac{| 475-445|}{445}\times100\\\\=\dfrac{30}{445}\times100=6.74157303371\approx6.416\%$

Hence, the percentage error in the first weighing. = 6.416%

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Step-by-step explanation:

Let the smallest angle be x.

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2 years ago

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prisoha [69]

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Step-by-step explanation:

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1 year ago

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Step-by-step explanation: hope this helps

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2 years ago

Read 2 more answers

What is the distance covered by a train while slowing down from

alukav5142 [94]

Answer:

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Step-by-step explanation:

As per the question:

The initial velocity of the train, v = 20 m/s

The final velocity of the train, v' = 6 m/s

Uniform deceleration, a = 1.6 $m/s^{2}$

Or uniform acceleration, a = - 1.6 $m/s^{2}$

<em>Here, the body decelerates, i.e., slows down at a uniform rate thus we take acceleration with negative sign.</em>

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2 years ago