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horrorfan [7]
2 years ago
4

What is meant by significant figures​

Physics
2 answers:
Paul [167]2 years ago
7 0

Answer:

each of the digits of a number that are used to express it to the required degree of accuracy, starting from the first nonzero digit.

Explanation:

navik [9.2K]2 years ago
3 0

Answer:

The term significant figures refers to the number of important single digits (0 through 9 inclusive) in the coefficient of an expression in scientific notation . The number of significant figures in an expression indicates the confidence or precision with which an engineer or scientist states a quantity.

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A car traveling in a straight line has a velocity of 3.29 m/s at some instant. After 4.99 s, its velocity is 8.29 m/s.
seraphim [82]

Use the definition of average acceleration:

<em>a</em> = ∆<em>v</em> / ∆<em>t</em>

We have

<em>a</em> = (8.29 m/s - 3.29 m/s) / (4.99 s)

<em>a</em> = 1.002 m/s²

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3 years ago
Wat is the volume of a marble in mL?
rewona [7]
4/3 pi (radius)^3
If the radius is in cm the volume will be in mL
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What is the equivalent resistance of a series circuit with the following resistors: 10 ohms, 35 ohms, and 150 ohms?
Eva8 [605]

Answer: R=10+35+150

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Explanation:

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3 years ago
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Each tire on a car has a radius of 0.330 m and is rotating with an angular speed of 13.9 revolutions/s. Find the linear speed v
Lostsunrise [7]

Answer:

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Explanation:

Given;

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angular speed of each tire, ω = 13.9 rev/s = 13.9 x 2π = 87.35 rad/s

The linear speed of the car is calculated as;

V = ωr

V = 87.35 rad/s x 0.33 m

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3 years ago
A singly charged 7Li ion has a mass of 1.16 10-26 kg. It is accelerated through a potential difference of 523 V and subsequently
mel-nik [20]

Answer:

R=0.023m

Explanation:

From the question we are told that:

Mass m=1.16*10^{-26}

Potential difference V=523V

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\frac{1}{2}mv^2=ev

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v=\frac{2*1.6*10^{-19}*542}{1.16*10^{-26}}

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Generally the equation for Force is mathematically given by

F=qvBsin \theta

Where

qVB=m\frac{v^2}{R}

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R=\frac{mv}{qB sin \theta}

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R=0.023m

8 0
3 years ago
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