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olganol [36]
2 years ago
11

Pleeeaaaaassseeee help

Business
1 answer:
ki77a [65]2 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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On July 1, the inventory of at Barnett Shoes was $60,000. Because of anticipated back-to-school sales, the owner wants to have a
AVprozaik [17]

Answer:

required purchase             83,500

Explanation:

The cost of inventory in july sales and our desired ending invenory is the amount we need. the beginning inventory is a portion of this demand already fullfil, we need to purchase for the difference.

cost of inventory sales for July:

           70,000 x (1 - 45%) =  38,500

desired ending inventory   105,000

beginning inventory        <u>    (60,000)   </u>

  required purchase             83,500

4 0
3 years ago
In calculating a predetermined overhead rate, a recent trend in automated manufacturing operations is to choose an activity base
iragen [17]

Answer: c. machine hours.

Explanation:

In reference to Automated Operations, the Activity base that is usually used to in determining a pre-determined overhead rate are Machine hours.

It is standard practice to relate overhead to the Direct Labor involved in the production of a commodity and since in this case the direct Labor mostly consists of Machines (Automated) then it is best to relate activities to the Machine hours involved instead.

7 0
3 years ago
Choco Chocolata is a cookie company in Juarez, Mexico that produces and sells American-style chocolate chip cookies with extreme
lyudmila [28]

Answer:

(1) The total amount of product costs is $79,430.

(2) The total amount of period costs is $37,300.

Explanation:

Note: There are two requirements in this question as follows:

(1) What is the total amount of product costs?

(2) What is the total amount of period costs?

These two are answered as follows:

(1) What is the total amount of product costs?

Product cost can be described as the expenses that are incurred in order to produce a product. These types of expenses are charged to cost of goods sold and include direct materials, direct labor, factory overhead, and consumable production supplies.

Therefore, the total amount of product costs of Choco Chocolata can be calculated as follows:

Choco Chocolata

Computation of Total Product Costs

<u>Details                                                                     Amount ($)   </u>

Utilities for the bakery                                                  2,100

Paper used in packaging product                                  180

Salaries and wages in the bakery                            23,500

Cookie ingredients                                                    43,500

Bakery labor fringe benefits                                        1,300

Bakery equipment maintenance                                   800

Depreciation of bakery plant and equipment           2,200

Uniforms for bakers                                                        750

Insurance for the bakery                                                900

Boxes, bags, and cups used in the bakery                 1,100

Overtime premiums                                                     2,600

Idle Time                                                                  <u>        500  </u>

Total                                                                          <u>   79,430   </u>

Therefore, the total amount of product costs is $79,430.

(2) What is the total amount of period costs?

Period costs are costs that are related to passage of time but cannot not be charged to the cost of goods sold.

Therefore, the total amount of period costs of Choco Chocolata can be calculated as follows:

Choco Chocolata

Computation of Total Period Costs

<u>Details                                               Amount ($)   </u>

Administrative costs                             2,300

Rent for administration offices            18,500

Advertising                                            3,500

Office Manager's salary                    <u>  13,000  </u>

Total                                                    <u>  37,300   </u>

Therefore, the total amount of period costs is $37,300.

8 0
3 years ago
Tariffs may raise the price that foreign customers must pay for goods produced in the United States, negatively impacting a U.S.
fenix001 [56]

Answer:

true

Explanation:

tarrifs raise the price of foreign goods

8 0
3 years ago
Beckett, Inc. reports the following cost information for​ March: Cost of Goods Manufactured $ 73 comma 000 Manufacturing Overhea
pentagon [3]

Answer:

Beckett, Inc.

Cost of Goods Manufactured Statement

Direct Materials Used      25, 140

Direct Labor $ 20,280

Manufacturing Overhead 18 ,900

Total Manufacturing Costs  $ 64,320

March 1 ​Work-in-Process Inventory,  9, 680

Cost of Goods Available for  Manufacture $ 74,000 ​

March 31 Work-in-Process Inventory, 1, 000

Cost of Goods Manufactured $ 73,000

March 1 Finished Goods​ Inventory, 8, 000

Cost of Goods available for sale $81,000

March 31 Finished Goods​ Inventory,  2, 000

Cost of Goods Sold $ 79,000

7 0
3 years ago
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