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Semenov [28]
3 years ago
10

Bob wants to measure the length of the red rectangle above. The ruler has 1 cm tick marks. Bob wants other scientists to have a

sense of the likely size of measurement errors. (The uncertainty.) Which reading makes the most sense for him to report? *
Physics
1 answer:
klasskru [66]3 years ago
8 0

Answer:

1 cm ± 0.05 cm

Explanation:

A ruler is readable to ±0.05 cm. This implies that any measurement taken using the ruler could be uncertain by 0.05 cm above or below the true value.

Hence, ±0.05 cm  is called the uncertainty or the precision of the ruler.

We obtained this from the fact that the meter rule is graduated in units of centimetres (cm). This implies that the smallest scale division is 1 mm. Thus, the uncertainty of the meter rule is given by; Δx = smallest increment/2 = 1mm/2 = 0.5mm = 0.05cm.

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A 20kg object acceleration by a force of 200N with coefficient of kineticfriction is 0.4 what is acceleration of the object?​
Schach [20]

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<u>Given</u><em> </em><em>-</em><em> </em><u>M</u><u> </u><u>=</u><u> </u>20 kg

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<u>To </u><u>find </u><u>-</u><u> </u> acceleration

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<h3>a = 0.04 m s²</h3>
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Which of these is most likely consequence of failing petroleum prices
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More sales of traditional, large cars are the most likely consequence of falling petroleum prices.

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