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3 years ago

12, The error in measurement may occur due to

Physics

1 answer:

Katyanochek1 [597]3 years ago

6 0

Answer:

d, Due to all reasons in a, b and c

Explanation:

All of the reasons from the choices can lead to errors in measurement. An error is an uncertainty introduced to a scientific process.

Errors can be due to the following reasons;

It can be to a poor technician; an inexperienced scientist can introduce serious into their set up. Even when recording their observation, a dearth of experience can lead to error.
Faulty apparatus can also lead to errors in measurement. An instrument that is poorly calibrated can also result in measurement errors.
An inappropriate scientific method or measuring guidelines can also lead to errors in measurements.

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A string under a tension of 50.4 N is used to whirl a rock in a horizontal circle of radius 2.51 m at a speed of 21.1 m/s. The s

Leokris [45]

Answer:

619.8 N

Explanation:

The tension in the string provides the centripetal force that keeps the rock in circular motion, so we can write:

$T=m\frac{v^2}{r}$

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T is the tension

m is the mass of the rock

v is the speed

r is the radius of the circular path

At the beginning,

T = 50.4 N

v = 21.1 m/s

r = 2.51 m

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$m=\frac{Tr}{v^2}=\frac{(50.4)(2.51)}{21.1^2}=0.284 kg$

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r' = 1.22 m

While the speed is increased to

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Substituting these new data into the equation, we find the tension at which the string breaks:

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