Questions
An engraver uses a magnifying glass (f = 7.20 cm) to examine some work, as in...

An engraver uses a magnifying glass (f = 7.20 cm) to examine some work, as in the drawing. The image he sees is located 28.0 cm from his eye, which is his near point. (a) What is the distance between the work and the magnifying glass? (b) What is the angular magnification of the magnifying glass?

In: Physics

•As the world is getting more and more connected, will the world become uni-cultural in the...

•As the world is getting more and more connected, will the world become uni-cultural in the near future? Which are the homogenizing and which the hydrogenizing forces in general? And in your home country Finland? How do you see the relation of culture and globalization in light of the recent pandemic (incl. how countries are (re)acting)?

In: Operations Management

Flexural strength design check of sections of a typical internal portal frame: The load cases which...

Flexural strength design check of sections of a typical internal portal frame:

The load cases which you are expected to analyse for portal frame in this exercise, and from which the design bending moments and the coincident axial forces required for this section should be derived, are discussed in the ‘Supplementary Notes’. The moment capacities Msx and Mbx and the axial capacities Ns, Ncx and Ncy may be determined using the tables in the AISC ‘Design Capacity Tables for Structural Steel’ publication.

Rafters:
Check the flexural strength of the rafters in a typical internal portal frame, in the general vicinity of the ridge. Again, check for the two cases of maximum sagging B.M. at or near the ridge and maximum hogging B.M. at or near the ridge, and allow for the coincident axial force. Again, note that:
 The purlins in the roof are at 1250mm centres, generally.
 Assume there is fly bracing at the ridge and then at 4 spaces from the ridge (obtain value depending on frame geometry).
For the rafters assume Grade 300 steel.

In: Civil Engineering

Retrograde motion of superior planet always occurs when the planet is a) in conjunction with the...

Retrograde motion of superior planet always occurs when the planet is a) in conjunction with the moon b)brighter than average c)near the autumnal equinox d) near a solstice e) dimmer than average 2) The moon a) spins once on its axis relative to the sun every 23 hours 56 mins. b) spins once on it axis relative to the sun every 24 hours c) spins once on its axis relative to the sun every 29.5 days d) spins once on its axis relative to the sun every 365 days e)never spins on its axis 3) The planets a) move faster in their orbit around the sun in km/s, the closer they are to the sun b) are always located at the same right ascension and declination in the sky c) are always found along the celestial equator d) are always located at declinations greater than 60 degrees e) are always observed along the meridian

In: Physics

A study was conducted to investigate the hypothesis that living within 100 meters of a large...

A study was conducted to investigate the hypothesis that living within 100 meters of a large highway increased the risk of childhood respiratory illness. The investigators recruited 200 children ages 6 to 10 years old living near highways and another 200 children of similar age, gender and ethnicity living more than 100 meters from highways. They followed the children for 3 months and asked the parents to record in a daily diary any symptoms of respiratory illness. At the end of the 3 months, 36 of the 200 “exposed” children (living near a highway) had developed at least one respiratory illness, while 17 of the 200 living further away had developed respiratory illness. a. What kind of study was this? b. What measure of disease frequency can be calculated? Calculate it for each group and interpret the results. c. What measure of association can be calculated? Calculate it and interpret the results.

In: Statistics and Probability

An article contained the following observations on degree of polymerization for paper specimens for which viscosity...

An article contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range:

415 421 422 422 425 427 430 435 436
439 446 446 448 453 457 462 464

(a) Construct a boxplot of the data.


Comment on any interesting features. (Select all that apply.)

The data appears to be centered near 428.There are no outliers.The data appears to be centered near 438.There is one outlier.There is little or no skew.The data is strongly skewed.


(b) Is it plausible that the given sample observations were selected from a normal distribution?

YesNo    


(c) Calculate a two-sided 95% confidence interval for true average degree of polymerization. (Round your answers to two decimal places.)

  ,



Does the interval suggest that 443 is a plausible value for true average degree of polymerization?

YesNo    


Does the interval suggest that 450 is a plausible value?

YesNo    

In: Statistics and Probability

3. Analyze and Journalize the following entries; On June 1, 2012 Sam Near created a travel...

3. Analyze and Journalize the following entries; On June 1, 2012 Sam Near created a travel agency called Tours-For-Less. These activities occurred during the company’s first month:

June

1

Near created the new company by investing $40,000 cash and computer equipment worth $60,000.

2

The company rented furnished office space by paying $3,200 rent for the first month.

3

The company purchased $2,400 of office supplies for cash.

10

The company paid $7,200 for the premium on a one-year insurance policy.

14

The owner’s assistant was paid $3,600 for two weeks’ salary.

24

The company collected $13,600 of commissions from airlines on tickets obtained for customers.

28

The assistant was paid another $3,600for two weeks’ salary.

29

The company paid the month’s $3,500 phone bill.

30

The company paid $700 cash to repair its computer.

30

The owner withdrew $2,850 cash from the business.

In: Accounting

C# Create an application that asks the user to enter their new password. The password must...

C# Create an application that asks the user to enter their new password. The password must be at least 6 characters long. Develop a custom exception handling case that checks for the password length. (hint: use " .Length " built-in method). If the new password is less than 6 characters long the custom exception should output an error message.

In: Computer Science

What are some actions a firm can take to shorten its cash conversion cycle? What are...

  1. What are some actions a firm can take to shorten its cash conversion cycle?

  1. What are some costs associated with high inventories? With low inventories?

  1. What is a “supply chain” and how are supply chains related to just-in-time inventory procedures?

  1. Explain how a new firm’s receivables balance is built up over time.

In: Finance

Program that does conversions (i.e. decimal to hexadecimal, binary to decimal) but needs to have a...

Program that does conversions (i.e. decimal to hexadecimal, binary to decimal) but needs to have a drop down menu to give you the option to choose with conversion you want to go from and convert into (JOptionPane). Cannot use the conversion tool that is built-in Java. Need to use equations or some sort. Please include comments on what is happening to understand.

In: Computer Science