Throughout history, research in the physical sciences has often been limited by our abilitiesof safely observing and studying the very phenomenon in question. As we make technological progress, we have increasingly more tools to expand our observational capabilities. Write a three to five (3-5) page paper in which you: Part 1: Procedures in the Physical Sciences: Challenges in Measurements Identify three (3) specific challenges to making direct measurements in the fields of astronomy, chemistry, physics, or earth science. Describe how scientists have utilized indirect forms of measure to overcome these challenges. Choose two (2) of the most historically influential tools or techniques in the physical sciences. Explain how these techniques or tools work, and how they helped to advance our understanding of the physical sciences. Part 2: Procedures in the Physical Sciences: A Survey of Safety Choose one (1) hazard associated with research in the physical sciences. Discuss how protective gear or equipment might be used to mitigate the hazard, as well as its efficacy. Describe the ways in which advancements in the physical sciences might impact the safety of the global community. Assess any special considerations for regulating this research. Part 3: Documentation Use at least four (4) quality resources in this assignment. Note: Wikipedia and similar Websites do not qualify as quality resources. The body of the paper must have in-text citations that correspond to the references. Integrate all sources into your paper using proper techniques of quoting, paraphrasing and summarizing, along with proper use of in-text citations to credit your sources.

A converging lens (f = 11.7 cm) is located 26.6 cm to the left of a diverging lens (f = -5.42 cm). A postage stamp is placed 39.7 cm to the left of the converging lens. (a)Locate the final image of the stamp relative to the diverging lens. (b) Find the overall magnification.

A -10nC charge is located at (x, y) = (0.80cm , 0 cm).

What is the x-component of the electric field at the position (x, y) = (5.2cm , 0 cm)?

What is the y-component of the electric field at the position (x, y) = (5.2cm , 0 cm)?

What is the x-component of the electric field at the position (x, y) = (?5.2cm, 0 cm)?

What is the x-component of the electric field at the position (x, y) = (?5.2cm, 0 cm)?

What is the x-component of the electric field at the position (x, y) = (0 cm, 5.2cm )?

What is the y-component of the electric field at the position (x, y) = (0 cm, 5.2cm )?

250mL of water at 15.0 ?C is placed in the freezer compartment of a refrigerator with a coefficient of performance of 4.00. How much heat energy is exhausted into the room as the water is changed to ice at -20.0 ?C ?

To the right is a liposome - a hollow sphere made up of a lipid bilayer (like a cell) but without any membrane proteins. Of the listed molecules, which, if any, would you expect would be able to freely move (diffuse) across the membrane (based on their size and polarity)? Choose ALL that would cross.

a) chloride ion (small, polar)

b) fatty acid (medium, nonpolar)

c) glucose (medium, polar)

d) nitric oxide (small, nonpolar)

e) sodium ion (small, polar)

a) By how much does the model estimate the crime rate would change due to a 1% increase in the percentage of students receiving free lunch (assuming all other things are constant)? What about 2.5%?

b) By how much does the model estimate the crime rate would decrease due to a 1,000 person increase in the total population (assuming all other things are constant)?

c) By how much does the model estimate the crime rate would change due to a 5,000 person increase in the total population (assuming all other things are constant)?

d) Use the full model specified above to predict the crime rate for a Denver neighborhood with a total population of 7,000 and 18% of the student population receiving free lunch. (Enter your answer to three decimal places.)

Part C

Add the following reactions together:

ClO(g)+O3(g)ClO2(g)+O(g)??ClO2(g)+O2(g)ClO(g)+O2(g)

Identify which species are intermediates, which are catalysts, and which are only reagents or products.

Drag each item to the appropriate bin.

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Delaney Company leases an automobile with a fair value of $10,000 from Simon Motors, Inc., on the following terms. 1. Non-cancelable term of 50 months. 2. Rental of $200 per month (at the beginning of each month). (The present value at 0.5% per month is $8,873.) 3. Delaney guarantees a residual value of $1,180 (the present value at 0.5% per month is $920). Delaney expects the probable residual value to be $1,180 at the end of the lease term. 4. Estimated economic life of the automobile is 60 months. 5. Delaney’s incremental borrowing rate is 6% a year (0.5% a month). Simon’s implicit rate is unknown. Instructions (a) What is the nature of this lease to Delaney? (b) What is the present value of the lease payments to determine the lease liability? (c) Based on the original fact pattern, record the lease on Delaney’s books at the date of commencement. (d) Record the first month’s lease payment (at commencement of the lease). (e) Record the second month’s lease payment. (f) Record the first month’s amortization on Delaney’s books (assume straight-line). (g) Suppose that instead of $1,180, Delaney expects the residual value to be only $500 (the guaranteed amount is still $1,180). How does the calculation of the present value of the lease payments change from part (b)? Please be sure to use current law change

As an accountant for Lee Company, your supervisor gave you the following calculations of the gross profit for the first quarter:

Alternative           Sales ($50 per unit)                  Cost of goods sold                      Gross Profit

    A                       $500,000                                 $200,000                                    $300,000

    B                       $500,000                                  228,000                                     272,000

    C                        500,000                                  213,333                                      286,667

The three alternative cost flow assumptions are FIFO, average, and LIFO (the alternatives are not necessarily presented in this sequence). Lee uses the periodic inventory system. The computation of the cost of goods sold under each alternative is based on the following:

                                                 Units                   Cost/Unit

Inventory, January 1                    12,000                      $20

Purchase, January 10                   4,000                      21

Purchase, February 15                  6,000                     22

Purchase, March 10                      8,000                     23

Required: Prepare schedules computing the ending inventory (in units and dollars) and proving the cost of goods sold shown here under each of the three alternatives.

A consumer has an income of $1,000 to spend on food and medicine. The price of one unit of food is $$5 and the price of one unit of medicine is $10. For each question, write down the mathematical expression of the budget constraint and draw it carefully. Put food on the x-axis and medicine on the y-axis. Label the intercepts, slopes, and kinks.

1. Suppose the consumer receives coupons for 50 units of food and those can only be used to buy food.

2. Suppose the consumer receives coupons for 50 units of food and can sell the coupons at half of the market price of the food.

3. Instead of the coupon, the consumer receives a 10% discount for additional units of food that exceed 100 units. That is, the consumer pays $5 for each of the first 100 units and $4.5 for each additional unit.

A particular reactant decomposes with a half-life of 131 s when its initial concentration is 0.361 M. The same reactant decomposes with a half-life of 233 s when its initial concentration is 0.203 M. What is the value and unit of the rate constant for this reaction?

1. What is the function of risk assessment? How is it conducted for information systems?.

2. Why are computer systems so vulnerable? Describe the most common threats against contemporary information systems.

During the 2008-2009 recession, many companies were recipients of government bailout money. Do you think the bailout was a good idea, and do you think the companies listed in the link above deserved the bailout money? Explain your reasoning. A yes/no/maybe answer to the question with an explanation of your reasoning. Include a detailed and accurate application of one or more of the concepts: discretionary fiscal policy, automatic stabilizers (automatic fiscal policy), incentives.

There are two sorted arrays nums1 and nums2 both of size n. Find the median of the two sorted arrays. The overall run time complexity should be O(log(n)).

Assess the internal environment of the company, ULTA BEAUTY INC.. Specifically evaluate the core competencies, sources of competitive advantage, and the sustainability of the advantages. The analysis should leverage the tools such as value chain, VRIN. Also, link to company performance.