Describe what is meant by significant figures and order of magnitude

All non-zero digits are significant; 1, 2, 3, 4, 5, 6, 7, 8, and 9; Zeros between non-zero digits are significant, like 705 and 80008; Leading zeros are never significant, like in 0.03 or 0068; Trailing zeros are significant ONLY if a decimal place is present; examples where the zeros are not significant include 100, 380; those that are include 38.00, 590.0, and 280.190; I hope this helps! Realizes that the post was made 8 years ago Oh well From what I understand, '370.' shows that the number is accurate up to the ones place (e.g. that it is 370 and not a rounded 373 or 368). It could actually represent 370.4, but '370.' is still a correct representation of 370.4 as '370.'is accurate up to the ones place and 370.4 rounded to the ones place is 370. 370 and 370.0 mathematically represent the same number but with significant figures, 370 is accurate up to the ones place and 370.0 is accurate up to the tenths place. Referencing the previously mentioned example, 370.4 can be accurately represented as '370.', but not 370.0. Hope that helps! Because they indicate that you measured that value to a higher degree of precision. If I measure something as exactly 100 millimeters and record it as 0.100 meters, that represents something different than saying 0.1 meters since in the later case it may of actually been 0.12m or 0.9m and I just rounded it off. By adding the extra 0s you know that the only rounding would have been to the nearest mm. Perhaps someone has already mentioned this,...

India – describe what is meant by significant figures describe what is meant by significant figures– We are going to start the discussion about DESCRIBE WHAT IS MEANT BY SIGNIFICANT FIGURES as per our readers’ demands and comments. If you want to know about this India topic, continue reading and learn more. People Also Read: significant figures, also called significant digits, any of the digits of a number beginning with the digit farthest to the left that is not zero and ending with the last digit farthest to the right that is either not zero or that is a zero but is considered to be exact. Significant figures are used to report a value, measured or calculated, to the correct number of decimal places or digits that will reflect the precision of the value. People Also Read: What is Significant Figures – Definition, Rules, Rounding, Solved Examples Rounding significant figures is done by considering the first non-zero digit if we are rounding off up to one significant figure. Look at the next digit to the right, if it equals to or greater than 5, then add 1 to the first non-zero digit, if it is less than 5 deduct 1 from the first non-zero digit. People Also Read: Significant figures (also known as the significant digits, precision or resolution) of a number in positional notation are digits in the number that are reliable and necessary to indicate the quantity of something. If a number expressing the result of a measurement (e. In a given number, all the certain digits plus...

• • › • › This article What is the Resultant Force and How to Find it (with Examples) In this article, you will learn what the resultant force (also known as net force) is, and how to find it when an object is subject to parallel forces as well as non-parallel forces with the help of examples. What is the resultant force? When an object is subject to several forces, the resultant force is the force that alone produces the same acceleration as all those forces. For example, if 4 forces act on a block and cause it to accelerate 1 m/s 2 south, then the resultant force is the force that, if applied alone to the block, will also make it accelerate 1 m/s 2 south. The reason why the resultant force is useful is that it allows us to think about several forces as though they were a single force. This means that to determine the effect that several forces have on an object, we only need to determine the effect that a single force has. How to find the resultant force? If we know the mass m of an object and the acceleration a produced by the forces that act on it, we can find the resultant force using Newton's Second Law. Indeed, according to Newton's Second Law, the force F that alone produces the acceleration a on an object of mass m is: R = m a Which indicates that the resultant force R has the same direction as a, and has magnitude equal to the product m a. For example, if a box of 1.5 kg is subject to 5 forces which make it accelerate 2.0 m/s 2 north-west, then the resultant forc...

iv) Describe what is meant by significant figures and order of magnitude. vi) In a worksh v) If the measured values of two quantities are A ± Δ A and B ± Δ B , Δ A and Δ B being the mean absolute errors. What is the maximum possible error in A ± B ? Show that if Z = B A ​ Z Δ Z ​ = A Δ A ​ + B Δ B ​ vi) Derive the formula for kinetic energy of a particle having mass m and velocity y vii) Find th Views: 5,267 1.5 kW is used for 30 minutes to press clothes Calculate the electrical energy consumed in (a) kilowatt hour (b) joule. Ans: (a) 0.75 kWh, (b) 2.7 × 1 0 6 J 3. Assuming the electric consumption per day to be 12 kWh and the rate of electricity to be ₹6.25 per unit, find how much money is to be paid in a month of 30 days ? Ans: ₹2250 4. In a premise 5 bulbs each of 100 W , 2 fans each of 60 W , 2 A.Cs each of 1.5 kW are used for 5 h per day. Find : Views: 5,961 5.16 A colour dise on rotation produces white colour Rotate the dise rapidly. You will notice that the disc appears white. This shows that seven colours violet, indigo, blue. green. yellow, orange and red being the constituent colours of white light, when combined produce the white colour effect. SPHERICAL MIRRORS Spherical mirrors are made by silvering the part AB of the hollow glass sphere as shown in Fig. 5.17. SOME TERMS R MIRROR (1) Pole: I Hollow sohere Fig. 5.17 Formation of a spherical mirror The surface on which silvering is done, is called the silvered surface and the reflection of light takes place from...

\( \newcommand\) • • • • • • • • • • • • • • • 1.1 The Scope and Scale of Physics • What is physics? • Some have described physics as a “search for simplicity.” Explain why this might be an appropriate description. • If two different theories describe experimental observations equally well, can one be said to be more valid than the other (assuming both use accepted rules of logic)? • What determines the validity of a theory? • Certain criteria must be satisfied if a measurement or observation is to be believed. Will the criteria necessarily be as strict for an expected result as for an unexpected result? • Can the validity of a model be limited or must it be universally valid? How does this compare with the required validity of a theory or a law? 1.2 Units and Standards • Identify some advantages of metric units. • What are the SI base units of length, mass, and time? • What is the difference between a base unit and a derived unit? (b) What is the difference between a base quantity and a derived quantity? (c) What is the difference between a base quantity and a base unit? • For each of the following scenarios, refer to Figure 1.4 and Table 1.2 to determine which metric prefix on the meter is most appropriate for each of the following scenarios. (a) You want to tabulate the mean distance from the Sun for each planet in the solar system. (b) You want to compare the sizes of some common viruses to design a mechanical filter capable of blocking the pathogenic ones. (c) You wan...

Recent Examples on the Web Though there are different types of bans, including some that are temporary, with a case of this magnitude, the injunction would likely be permanent, Byrd said. — Byluisa Beltran, Fortune, 12 June 2023 That envisions a magnitude 7.8 earthquake that could result in 1,800 deaths and nearly 50,000 injuries — the deadliest quake in modern Southern California history. — Rong-gong Lin Ii, Los Angeles Times, 9 June 2023 The 20-nation economy shrank by 0.1 percent between January and March, revised data showed Thursday, adding to a fourth-quarter decline of the same magnitude and resulting in the first six-month contraction since the COVID-19 pandemic. — BostonGlobe.com, 8 June 2023 Given the magnitude of damage following a hurricane, trees are—understandably—not the first focus. — Dan Lambe, Treehugger, 1 June 2023 When a star of this magnitude explodes, its brightness shoots through the roof. — Jackie Appel, Popular Mechanics, 18 May 2023 Lynch anticipates that the magnitude of the gun restrictions -- along with other bills Democrats pushed this year -- will incite a backlash in the next election, especially in swing districts that helped reinforce Democrats' majority in the legislature. — Democrat-gazette Staff From Wire Reports, Arkansas Online, 29 Apr. 2023 Hence, Citi and MS’ exposures to oil and gas are similar in dollar magnitudes, subject, of course, to the earlier question of industry coverage. — Shivaram Rajgopal, Forbes, 19 Apr. 2023 Daniels ...

Significant Figures Significant figures are used to establish the number which is presented in the form of digits. These digits carry a meaningful representation of numbers. The term significant digits are also used often instead of figures. We can identify the number of significant digits by counting all the values starting from the 1st non-zero digit located on the left. For example, 12.45 has four significant digits. • • • • Definition The significant figures of a given number are those significant or important digits, which convey the meaning according to its accuracy. For example, 6.658 has four significant digits. These substantial figures provide precision to the numbers. They are also termed as significant digits. Rules for Significant Figures • All non-zero digits are significant. 198745 contains six significant digits. • All zeros that occur between any two non zero digits are significant. For example, 108.0097 contains seven significant digits. • All zeros that are on the right of a decimal point and also to the left of a non-zero digit is never significant. For example, 0.00798 contained three significant digits. • All zeros that are on the right of a decimal point are significant, only if, a non-zero digit does not follow them. For example, 20.00 contains four significant digits. • All the zeros that are on the right of the last non-zero digit, after the decimal point, are significant. For example, 0.0079800 contains five significant digits. • All the zeros th...

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