Five different environments were chosen to compare the seed yield of four strains of a weed species. In each environment, four adjacent plots of approximately same fertility and moisture level were found and each strain was randomly assigned to a plot. At maturity, ten random samples were taken from each plot and the mean number of seeds per plant was recorded. These data are presented below:

                                                                                                Strain (I)

                                    Environment (J)                   A         B         C         D        

            _______________________________________________________________      

                                                            1                      18        20        17        15                   

                                                            2                      16        18        16        18                   

                                                            3                      18        21        16        13                   

                                                            4                      18        20        17        16                   

                                                            5                      19        17        18        20                   

1. Complete the analysis of variance (ANOVA) table for the experiment.                
2. Was it a reasonable design to use for the experiment? Explain.                                                             

An experiment involving perfect inelastic collision is conducted: two carts with velcro strips are placed on a track attached to a motion sensor. One cart is stationary and the other is pushed slightly towards the cart such that it attaches to the cart that is stationary (via. velcro). Given the following data of the experiment, what is the expected final velocity of the moving object? Compare the expected final velocity to the actual measured one, then determine what the percentage error of it is.

For some reason, I keep getting 0.09918525 m/s, but the percentage error is too high and becomes 56%. What am I doing wrong? Please show work, thank you!

A balance and torque experiment is conducted with an UN-balanced ruler.

Length of the ruler: 1 m

Mass of the ruler: 149 g

The pivot is at the 32-cm mark.

A 77-g mass is located at the 24-cm mark of the ruler.

We want to balance the ruler by placing another mass at the 11-cm mark.

What should be magnitude of this additional mass?

A balance and torque experiment is conducted with an UN-balanced ruler.

Length of the ruler: 1 m

Mass of the ruler: 97 g

The pivot is at the 61-cm mark.

A 45-g mass is located at the 33-cm mark of the ruler.

We want to balance the ruler by placing a 207-g mass somewhere on the ruler.

At which mark on the ruler should we place the 207-g mass?

Post-Lab Questions: Answer. 1. What should you examine to determine the precision of your results? Explain. 2. What should you examine to determine the accuracy of your results? Explain. 3. If the standardization of the NaOH in Experiment 7 was not performed correctly and the experimental normality was too low, how would that affect the experimental equivalent weight being determined in this experiment? Would it be too high or too low? Explain. 4. You were allowed to weigh out between 0.35 g and 0.40 g of the unknown sample. If you used 0.35 g for Trial #1 and 0.40 g for Trial #2, would the experimental equivalent weight for Trial 2 be higher, lower or the same as that of Trial #1? Explain. ACID-BASE TITRATION Determination of the equivalent weight of an unknown acid.

A successful cloning project of Dimetrodon has just been completed that resulted in several live and reproducing specimens of dimetrodons. Since Dimetrodons are early "stem-mammal members", a non-mammal that gave rise to the mammalian lineage, no one knows how it goes through development, similar to fish, amphibians, chickens, reptiles, mammals, or a new unique process altogether. You have been designed to lead the project to determine how gastrulation occurs in dimetrodons. You have decided to approach the problem by locating the equivalent of the Spemann organizer. Please design two different experiments that you will implement to determine where the organizer is located. For each experiment please include anticipated results, what the results would indicate, and possible difficulties that may occur during this experiment. (Money and Specimens are not a problem)

Question 3:

In “Orthogonal Design for Process Optimization and Its Application to Plasma Etching”, an experiment is described to determine the effect of flow rate on the uniformity of the etch on a silicon wafer used in integrated circuit manufacturing. Three flow rates are used in the experiment, and the resulting uniformity (in percent) for six replicates is shown below.

1. Does flow rate affect etch uniformity? Use α = 0.05.
2. Do the residuals indicate any problems with the underlying assumptions?
3. Use the Kruskal-Wallis procedure with α = 0.05 to test for differences between mean uniformity at the three different flow rates.

1. Watch the “Brown eyes vs. Blue yes” clip and summarize:

What were the findings of this experiment? How is prejudice demonstrated? How is discrimination demonstrated?

What can we learn from this experiment?

2. Watch the “Social Conformity” clip in your Canvas site and answer:

What did you think about the clip? Does it demonstrate the “power” of social conformity?

Please answer the following questions

Have you ever been a subject for stereotyping?

Can you indicate which stereotypes do you hold? Do any of them pertain to yourself?

3. https://www.ted.com/talks/uldus_bakhtiozina_wry_photos_that_turn_stereotypes_upside_down and answer the following questions:

               How does Uldus Bakhtiozina target social norms?

               What is your opinion/reflection in regard to the subject/idea of this talk?

This is for a titration experiment starting with 25 ml of HCL. I've answered two but am struggling with the others.

2. Find the equivalence point on the graph. What is the equivalence volume of NaOH at this point?

The pH at the equivalence point is 8.77 and the volume of NaOH at this point is 40.00 mL of NaOH

3. a. Calculate the unknown molarity of the diluted acetic acid from the volumes of acid and base at the equivalence point and the molarity of the NaOH M_a × V_a = M_b × V_b.

b. Once you find the molarity of your diluted solution use that to calculate the molarity of the original solution using the equation M₁ × V₁ = M₂ × V₂ a second time.

4. In experiment 1, you were able to calculate the concentration of the HCl solution using the initial pH. Would this same approach work with the acetic acid? Why or why not?