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4 years ago

When is a zero not significant?

Physics

2 answers:

maria [59]4 years ago

8 0

Answer:

Not between significant digits.

Explanation:

A zero not significant when it's not between significant digits.

tigry1 [53]4 years ago

5 0

Answer:

Zero are not significant when indicating the decimal point position

Explanation:

The number zero has a special meaning with respect to its meaning, when it is placed to the right as a decimal, its meanings so precision measurements were made, for example 10 cm and 10.0 cm, the first one has an accuracy of one centimeter and the second has an accuracy of 0.1 cm.

In the case of being placed to the left of all numbers, the meaning is to indicate where the decimal point goes, but it does not give information about the accuracy of the measurement, in this second case the zeros are not significant, for example: 0.1 0.0001 in these two cases are not significant

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Am un test de rezolvat la fizică mă puteți ajuta

OleMash [197]

Answer:

umm

Explanation:

i don't speak Spanish sorry

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3 years ago

Paula has walked in a straight line, 30.5° north of west, for 1650 meters. How far south and east should she walks to return to

olchik [2.2K]

The answer is A.
Sy = 1650 x sin30.5 = 837.4 m toward south
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8 0

3 years ago

Consider a uniform sphere, which has a mass of 4.80 kg and a radius of 22.0 cm. A tangential force of 11.2 N is applied to the o

Tcecarenko [31]

Answer:

The moment of inertia of this sphere is $0.0929\ kg-m^2$ .

Explanation:

It is given that,

Mass of the sphere, m = 4.8 kg

Radius of the sphere, r = 22 cm = 0.22 m

Tangential force, F = 11.2 N

The moment of inertia of the uniform sphere is given by :

$I=\dfrac{2}{5}mr^2$

$I=\dfrac{2}{5}\times 4.8\ kg\times (0.22\ m)^2$

$I=0.0929\ kg-m^2$

So, the moment of inertia of this sphere is $0.0929\ kg-m^2$ . Hence, this is the required solution.

8 0

3 years ago

A car traveling south is 200 kilometers from its starting point after 2 hours. What is the average velocity of the car?

Oksi-84 [34.3K]

Explanation:

Total displacement = 200 km

Total time taken = 2 hour...

Now...

$average \: velocity \: = \frac{total \: displacement}{total \: time \: taken \: } \\$

$= \frac{200}{2} \\$

= 100 kilometers/hour south

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3 years ago

A wrench is accidentally dropped from the top of a mast on a sailboat. Will the wrench hit at the same place on the deck whether

alekssr [168]

Answer:

Yes, because the wrench is moving at the same speed as the sailboat.

The main difference is that a person on the ground would see the wrench moving diagonally, while a person on the boat would see the wrench falling straight down,

This difference in paths lead to the relativistic change in lengths.

8 0

4 years ago