Questions

The current population of a threatened animal species is 1 2 million but it is declining with a half life of 25 years How many animals will be left in 30 years in 5 years The population after 30 years will be animals Round to the nearest whole number as needed

Suppose the cells of a tumor are idealized as spheres each with a radius of 4 m micrometers The number of cells has a doubling time of 40 days Approximately how long will it take a single cell to grow into a multi celled spherical tumor with a volume of 0 6 cm 1 cm 10 000 m Assume that the tumor spheres are tightly packed Choose the function below that best gives the exponential growth for a number of cells where y t is the number of cells in the tumor A y t 0 6e0 017329t B y t 0 017329t C y t 0 017329t OD y t 0 6e 0 017329t It would take a single cell about days to grow into a multi celled spherical tumor with a volume of 0 6 cm

A 1 2 0 3 3 A a11 912 a21 922

Evaluate the following integral In 10 In 10 Sa In 6 coth 6s ds coth 6s ds Type an exact answe

LED light emitting diode bulbs are rapidly decreasing in cost and they are more energy efficient than standard incandescent light bulbs and CFL compact fluorescent light bulbs Haitz s law predic that the cost per lumen of an LED bulb decreases by a factor of 10 every 10 years This means that 10 years from now the cost of an LED bulb will be 1 10 of its current cost Predict the cost of a particular LED bulb in 2026 if it costs 4 dollars in 2018 Create an exponential model for the given situation Use the exact value for k in the function y t Type an expression using t as the variable COLLE

5 2 1 Bending Stress and the Plastic Moment A flexural member is fabricated from two flange plates 2 x 7 and a web plate x 17 The yield stress of the steel is 50 ksi a Compute the plastic section modulus Z and the plastic moment Mp with respect to the major principal axis b Compute the elastic section modulus S and the yield moment M with respect to the major principal axis What do you think about the answer

A consumer electronics company was formed to develop cell phones that run on or are recharged by fuel cells The company purchased a warehouse and converted it into a manufacturing plant for 9 000 000 It completed installation c assembly equipment worth 1 500 000 on December 31st The plant began operation on January 1st The company ha a gross income of 9 000 000 for the calendar year Manufacturing costs and all operating expenses excluding the capital expenditures were 2 380 000 The depreciation expenses for capital expenditures amounted to 449 000 The corporate tax rate is 21 a Compute the taxable income of this company The taxable income of this company is Round to the nearest dollar

The current population of a threatened animal species is 1 4 million but it is declining with a half life of 25 years How many animals will be left in 35 years years The population after 35 years will be animals Round to the nearest whole number as needed

From the definition 6 lim h

if x 1 f x 2 if 1 x 4 x if x 4 23

What is the sign of the slope of the line shown 5 4 3 2 1 4 a 1 7 1 3 4 5 1 2 The slope of the line is O negative O zero O positive O undefined G 4 5 a

Evaluate the limit lim s 0 1 2 5 s S 1 25

The current population of a threatened animal species is 1 5 million but it is declining with a half life of 20 years How many animals will be left in 40 years in 75 years animals The population after 40 years will be Round to the nearest whole number as needed

Two cyclists leave towns 64 miles apart at the same time and travel toward each other One cyclist travels 10 what is the rate of each cyclist Note that the ALEKS graphing calculator can be used to make computations easier Rate of the slower cyclist 7 h mi DO X G slower than the other If they meet in 2 hours

In tax year 1 an electronics packaging firm had a gross income of 32 000 000 8 000 000 in salaries 7 000 000 in wages 1 100 000 in depreciation expenses a loan principal payment of 250 000 and a loan interest payment 200 000 Determine the net income of the company in tax year 1 The corporate tax rate is 21 The net income of the company in tax year 1 is Round to the nearest dollar

A corporation has the following financial information for a typical operating year Click on the following icon in order to copy its contents into a spreadsheet Gross revenue Cost of goods sold Operating costs Federal taxes State taxes 7 800 000 3 650 000 780 000 667 870 189 660 a On the basis of this financial information determine both federal and state marginal tax rates The marginal state tax rate is Round to two decimal places

The current population of a threatened animal species is 1 5 million but it is declining with a half life of 20 years How many animals will be left in 40 years years animals The population after 40 years will be Round to the nearest whole number as needed

Determine the relative phase relationship of the two waves u1 t 10 cos 377t 43 V u2 t 10 cos 377t 117 V Notes on entering solution Enter your solution with respect to u2 t leads u1 t by Enter your solution in degree Do not include units in your answer ex 5 is entered as 5

Calculate current across the capacitor shown in Fig P8 6 if the voltage input is v1 t 30 cos 262t 25 V v t Figure P8 6 i t ex 5 is entered as 5 C 1 F For a current i t C cos wt P enter the value of the phase angle P be sure that your answer is between 180deg to 180deg Notes on entering solution Enter your solution in degrees Have your current in cosine format Do not include units in your answer

Given i t 5 cos 430t 120 A determine the period of the current Notes on entering solution Enter your solution in seconds s Enter your solution to the nearest ten thousandth of a second Do not include units in your answer ex 5s is entered as 5 0000

Evaluate the definite integral In 12 S 0 In 12 tanh x dx one

Evaluate the following integral S 2dx 2dx 144 X 12

Evaluate the definite integral 1 1 0 cosh 3x sinh 3x dx cosh 33x sinh 3x dx Type an exact answer

The Burgess Shale preserves fossil organisms from which type of environment O floodplain O seafloor O beach

The Cambrian explosion occurred during the early mid Cambrian late Archean late Paleozoic

Which choice best describes the Cambrian explosion oxygenation of the earth s atmosphere diversification of Ediacaran organisms a burst of Metazoan diversity Odiversification of microbial diversity in the Archean

The half life of a radioactive substance is 50 years If you start with some amount of this substance what fraction will remain in 150 years What fraction will remain in 200 years The fraction that will remain in in 150 years is the following Simplify your answer

Based on what you have read how can you motivate yourself Utilize at least 5 concepts from lecture or text to explain your answer Be specific in applying concepts to yourself

A Write an example of collecting data using 1 Simple Random Sampling 2 Systematic Random Sampling 3 Stratified RandomSampling 4 Cluster Sampling B Tell whether the following questions are biased or fair Rewrite biased questions as fair questions 1 Do you think bike helmets should be mandatory for all bike riders 2 Do you prefer the natural beauty of hardwood floors in your home 3 Do you exercise regularly 4 Do you eat at least the recommended number of servings of fruits and vegetables to ensure a healthy and long life 5 Do you prefer the look and feel of thick lush carpeting in your living room 6 Do you take a daily multiple vitamin to supplement your diet 7 Do you read the newspaper to be informed about world events 8 Do you feel that the TV news is a sensational portrayal of life s problems

As a measure of your participation you will write 200 word minimum responses to the readings as well as responding to at least one other post In these posts I want to see concrete examples where you critically reflect on the readings This can include citing specific photographs and photographers theoretical connections between different readings ideas themes and or the author s own argument Please refer to my separate guide on discussion posts for full details Posts are due by Sunday 6pm almost every week There will not be an opportunity to post after the deadline so make sure you enter the due dates into your calendar now so that you don t miss them Keep in mind that our reading assignments will cover similar but not identical material to the weekly lectures I have scheduled the readings so they foreshadow the content we cover in lecture that day so it is essential you do the readings prior to the lecture this form of assessment is designed to get you ready to engage with lecture content in a meaningful way Weekly readings are listed on the course schedule for the weeks they are due Search entries or author Unread UNKNOWN PHOTOGRAPHER Portrait of a Laundress 1848 50 5 5 16 x 3 5 16 inches Daguerreotype with applied color Photography democratized portraiture by making it economically feasible for or dinary working people to have their likeness memorialized Here a laundress ap nearing out of an ethereal setting and staring directly into the camera grips a bar

Discussion Board Posts 25 total As a measure of your participation you will write 200 word minimum responses to the readings as well as responding to at least one other post In these posts I want to see concrete examples where you critically reflect on the readings This can include citing specific photographs and photographers theoretical connections between different readings ideas themes and or the author s own argument Please refer to my separate guide on discussion posts for full details Posts are due by Sunday 6pm almost every week There will not be an opportunity to post after the deadline so make sure you enter the due dates into your calendar now so that you don t miss them Keep in mind that our reading assignments will cover similar but not identical material to the weekly lectures I have scheduled the readings so they foreshadow the content we cover in lecture that day so it is essential you do the readings prior to the lecture this form of assessment is designed to get you ready to engage with lecture content in a meaningful way Weekly readings are listed on the course schedule for the weeks they are due Search ontries or author Unread WHAT IS A DAGUERREOTYPE In the winter of 1838 1839 American painter and inventor Samuel F B Morse 1791 1872 was in Paris to demonstrate his electric telegraph and he arranged a meeting with Daguerre After seeing Daguerre s process Morse wrote to his brother that daguerreotypes resemble aquatint engraving for they are in simple chiarooscuro sic and not in colors but the exquisite minuteness of the delineation cannot be con ceived No painting or engraving ever approached it The impressions of in terior views are Rembrandt perfected The daguerreotype is a physical container of information having the properties of both a two dimensional image and a three dimensional object The daguerreo type does not look or feel like a contemporary paper photograph nor is it made like one Its image rests on the highly polished silvered surface of a copper plate whose mirror like brilliance provides unparalleled visual depth but also makes viewing the picture problematic A daguerreotype must be viewed from a specific angle or its image will appear as a negative that is tonally reversed Above all the daguerreotype process produced a singular unique image unable to be print ed multiple times The daguerreotype s greatest technical advantage is its ability to render incredible detail Its shimmering surface is a physically luxurious one that can beautify an ordinary subject by anointing it with a sense of visual splen dor At its best the image can seem to rise from the surface giving a sense of a dimensionality The daguerreotype s subtle perfection and

Divide 0 925 3 7

The graph of the function has one relative extreme point Plot this point and check the concavity there Using only this information sketch the graph f x x 8x 7 The relative extreme point on the graph is Type an ordered pair

The graph of the following function has one relative maximum point and one relative minimum point Find these points using the first derivative test f x x3 9x 15x 1 The relative maximum is Type an ordered pair

The graph of the function has one relative maximum and one relative minimum point Plot these two points and check the concavity there Using only this information sketch the graph f x C 1 x3 3x2 8x 12 3 The relative minimum point on the graph is Simplify your answer Type an ordered pair Use integers or fractions for any numbers in the expression

a If g x is the first derivative of f x what is the nature of f x when x 2 below b If g x is the second derivative of f x what is the nature of f x when x 4 Ay 2 S 6 y g x 6 X 8 10 a If g x is the first derivative of f x what is the nature of f x when x 2 OA f x has a local minimum at x 2 OB f x has a local maximum at x 2 OC f x is decreasing at x 2 OD f x is increasing at x 2

The graph of the function has one relative maximum and one relative minimum point Plot these two points and check the concavity there Using only this information sketch the graph f x x 6x The relative minimum point on the graph is Type an ordered pair

Sketch the following curve indicating all relative extreme points and inflection points y 8 3x x3 The relative extreme points are Type an ordered pair Use a comma to separate answers as needed 30

Use the approximate doubling time formula for the case described below Discuss whether the formula is valid for the case described An economic indicator is increasing at the rate of 4 per year What is its doubling time By what factor will the indicator increase in 5 years Use the approximate doubling time formula What is its doubling time 17 5 years Type an integer or decimal rounded to the nearest tenth as needed Use the approximate doubling time formula By what factor will the indicator increase in 5 years 1 21 Type an integer or decimal rounded to the nearest hundredth as needed Is this formula valid in the case described Yes No

The Burgess Shale preserves fossil organisms from which type of environment Oseafloor O floodplain lakebed O beach

The Cambrian explosion resulted in many different metazoan body plans These groups all still have living members True O False

The Cambrian explosion is best known from the Burgess Shale a fossil locality in O Minnesota USA O Warrawoona Australia O Yucatan Mexico British Columbia

Describe two reasons why the fossils from the Burgess Shale are so well preserved Why isn t this type of preservation common

40 Find the area of the top view of the piece shown Dimensions are in inches Round the answer to 1 decimal place 298 5 2 095 shaded

S The scientific method II Complete each of the following statements to describe the parts of the scientific method Then place the sentences in the correct order in which the scientific method tends to flow 1 The scientific method begins with a or an Click to select of a natural event 2 Scientists use reasoning to combine observations into a tentative explanation or Click to select 3 Scientists develop a good experimental design that contains both a test group in which the experimental variable is altered and Click to select group in which the experimental variable is not altered a 4 Analysis of the data reveals how the manipulated variable also known as the Click to select variable affects the measured variable the Click to select variable 5 The results of an experiment are called data and must be properly analyzed in order for a Click to select to be reached

ces Which one of the four recorded motor unit action potentials MUAPs corresponds to the smallest number of muscle fibers contracting 1 2 Multiple Choice O O 3 4

Where is the black electrode placed in the electromyograph EMG lab Multiple Choice O O O lateral wrist over the bicep medial wrist anterior elbow

ces When sodium flows through open voltage gated channels the membrane Multiple Choice O hyperpolarizes repolarizes reaches resting potential

y x5 5x 4x a Find the zeros algebraically Enter your answers as a comma separated list If there are no real zeros enter DNE X b Use a graphing utility to graph the function y O 4 4 4 2 y A 2 4 X 4 y M 4 2

Use the approximate doubling time formula for the case described below Discuss whether the formula is valid for the case described An economic indicator is increasing at the rate of 3 per year What is its doubling time By what factor will the indicator increase in 5 years Use the approximate doubling time formula What is its doubling time years Type an integer or decimal rounded to the nearest tenth as needed