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olganol [36]
3 years ago
11

Pleeeaaaaassseeee help

Business
1 answer:
ki77a [65]3 years ago
8 0

Answer:

Explanation:

An instrument is accurate when it gives the correct value of the quantity being measured

e. g. if we perform an experiment to determine the density of mercury and we get a value of 8.5 − instead of − the inaccurate answer could be due to the balance or the measuring cylinder being inaccurate (once the experiment has not committed any error)

Select the instruments you would use to measure the following. State why you have chosen each instrument and give the range of measurements possible with the instrument and its sensitivity.

The thickness of a human hair

The diameter of a table tennis ball

The area of a window pane

The inside diameter or bore of a water pipe

The diameter of a bolt when deciding the size of the hole to drill

The volume of liquid in a wine bottle

ERRORS

13 Errors are normally classified in three categories: systematic errors, random errors, and blunders.

A final source of error, called a blunder, is an outright mistake. A person may record a wrong value, misread a scale, forget a digit when reading a scale or recording a measurement, or make a similar blunder. These blunder should stick out like sore thumbs if we make multiple measurements or if one person checks the work of another. Blunders should not be included in the analysis of data.

14 Systematic Errors

Systematic errors are due to identified causes and can, in principle, be eliminated. Errors of this type result in measured values that are consistently too high or consistently too low. Systematic errors may be of four kinds:

Instrumental. For example, a poorly calibrated instrument such as a thermometer that reads 102 oC when immersed in boiling water and 2 oC when immersed in ice water at atmospheric pressure. Such a thermometer would result in measured values that are consistently too high.

Observational. For example, parallax in reading a meter scale.

15 Systematic Errors continued

Environmental.

Theoretical.

16 Random Errors

Random errors are positive and negative fluctuations that cause about one-half of the measurements to be too high and one-half to be too low. Sources of random errors cannot always be identified. Possible sources of random errors are as follows:

1. Observational. For example, errors in judgment of an observer when reading the scale of a measuring device to the smallest division.

17 Environmental. For example, unpredictable fluctuations in line voltage, temperature, or mechanical vibrations of equipment.

Random errors, unlike systematic errors, can often be quantified by statistical analysis, therefore, the effects of random errors on the quantity or physical law under investigation can often be determined.

18 An example fitting to distinguish between systematic and random errors is suppose that you use a stop watch to measure the time required for ten oscillations of a pendulum. One source of error will be your reaction time in starting and stopping the watch. During one measurement you may start early and stop late; on the next you may reverse these errors. These are random errors if both situations are equally likely.

Repeated measurements produce a series of times that are all slightly different. They vary in random vary about an average value.

If a systematic error is also included for example, your stop watch is not starting from zero, then your measurements will vary, not about the average value, but about a displaced value.  

19 Blunders

A final source of error, called a blunder, is an outright mistake. A person may record a wrong value, misread a scale, forget a digit when reading a scale or recording a measurement, or make a similar blunder. These blunder should stick out like sore thumbs if we make multiple measurements or if one person checks the work of another. Blunders should not be included in the analysis of data.

20 Click on the links to watch the tutorials!

Using the Instruments

The vernier caliper

The micrometer

The triple beam balance

Click on the links to watch the tutorials!

Download ppt "Sensitivity, Accuracy And Range Of An Instrument"

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If bonds for Crayon Corporation, with a face value of $150,000, are converted into common stock when the carrying value of the b
Llana [10]

Answer:

(C) Bonds Payable for $150,000

Explanation:

the face value of the bonds will the value at which bonds payable account enter the accounting. Then, there is a discount which decrease the net value of the bonds:

Bonds Payable        150,000 credit

Discount on bonds   15,000  debit

When the bonds are converted, we will write-off these account against common stock and additional paid-in

To wirte-off the account we need to post them in the other side so we got:

Bonds payable debit 150,000 debit

       Discount on bonds         15,000 credit

      Common Stock                       xx credit

      Additional paid.in                    xx credit

These makes option C correct

5 0
3 years ago
Suppose you win a small lottery and have the choice of two ways to be paid: You can accept the money in a lump sum or in a serie
Salsk061 [2.6K]

Answer:

take the payments over time payout

Explanation:

My personal opinion/advice would be to take the payments over time payout. There are many reasons for this, the first one being that most individuals are not used to receiving large sums of cash and usually end up wasting all the money as soon as they receive it, which usually does not occur if the payments are made over time. The second and more important reason is that if the payments are made over different years your would pay a much lesser amount on taxes every year that passes. This means that the even with the interest rate you would most likely have more overall money if you take the payments over time.

8 0
3 years ago
With regard to the factors of production, "land" refers to which of these?
Orlov [11]
A) because that is they only one that actually makes sense
6 0
2 years ago
Suppose you purchase one share of the stock of Red Devil Corporation at the beginning of year 1 for $42.50. At the end of year 1
kkurt [141]

Answer:

17.76%

Explanation:

The computation of the time-weighted return on your investment is given below

But before that we have to do the following calculations

Year 1 = ($46.50 - $42.50) + 2 ÷ ($42.50) × 100 = 14.12%

Year 2 = ($54.50 - $46.50) + 2 ÷ ($46.50) × 100 = 21.51%

Now the time weighted return is

(1 + t)^2 = (1 + 14.12%) × (1 + 21.51%)

= 1.1412 × 1.2151

= √1.3867 - 1

= 17.76%

8 0
3 years ago
What percentage of business in America are home businesses?<br> A. 10%<br> B.33%<br> C.52%<br> D.67%
Free_Kalibri [48]

the answer is ( 52% )


4 0
3 years ago
Read 2 more answers
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