heart valves and pumps lab experiment

What happened when you pressed on the balloon stretched over the jar? What structure in this experiment mimics a heart valve? How did valve influence the experimental results? If possible, indicate the differences in water displaced (in ml) with valve versus without the Valve. Does the valve enhance water flows? Why?

please help

An experiment was performed to improve the yield of a chemical process. Four factors were selected, and two replicates of a completely randomized experiment were run. Based on the ANOVA table below, determine which factors are important in explaining yield. Use α = 0.05.

In this experiment, we have claimed to measure the speed of sound in air. To do this, we have used an audible frequency sweep. Why can we claim that the speed of sound will be the same over the bandwidth of the sweep? Is this assertion justified based on your results from experiment 2? Hint: Consider how sound (longitudinal pressure waves) propagate in a medium. (5 pts)

1. You are planning to do some experiments to demonstrate the dynamic nature of microtubules. How you would fluorescently label microtubules in order to use for FRAP experiments inside a cell?
2. Once you have labeled microtubules, you decide to treat the cells with taxol and then perform FRAP What would be your control for this experiment? What are your predictions for the experimental and control experiment results?

Some students do homework with the tv on. some researchers want to see if people can work as effectively with as without distraction. the researchers will time some volunteers to see how long it takes them to complete some relatively easy crossword puzzles with and without tv on.

a) design an experiment that will require a two sample independent test

b) design experiment that will require dependent test

Which of the following experiments will produce constructive interference at the point of view of the observer (eye). The index of refraction of the soap film is 1.25 and there is air above the soap film. In experiments I) (t=300 nm) and III) (t=250 nm) there is air below the soap film, but in experiment II) (t=100 nm) there is a glass with index of refraction equal to 1.5. Assume that in all cases the light is nearly normal to the surface and that the light has 400 nm wavelength in the soap film.

A. None

B. Experiment I only

C. Experiment II only

D. Experiment I and III only

Assume that the light intensity is the same in all cases. Which of the following is true?

1. Sex determination in Mammals. You have identified a gene that you have named “mont1” (for ‘make ovaries not testes’) that is expressed at the time when the bipotential gonad becomes specified to become an ovary. Because of this “show it” evidence that mont1 is expressed in the right place at the right time, you hypothesize that mont1 is a critical regulator of the female primary sex determination pathway to specify ovary development.
   1. From what you know about the primary sex determination pathway for ovary development, what signaling pathway would you predict may activate mont1 expression?
   2. What “lose it” experiment could you do to determine if mont1 is necessary for ovary development. Briefly describe the expected result. (As in … I would do X experiment and expect to see Y result if mont1 is necessary for ovary development).
   3. What “move it” experiment could you do to determine if mont1 is sufficient for ovary development. Briefly describe the expected result. (As in … I would do X experiment and expect to see Y result if mont1 is sufficient for ovary development).

1. After reading about the experiments of Milgram, Asch, Zimbardo, and Elliot pick three experiments to analyze and then complete the following for each experiment: In your own words, not copied from an online resource, provide a brief summary of each of the three experiments you picked.

2. What was the original purpose of each of the three experiments, i.e. why did Milgram, Asch, Zimbardo, & Elliot conduct their experiment?

3. What were the results of each experiment, i.e. what, if anything, was discovered about human nature?

4. Were the experiments conducted ethically? Why or Why not? In developing your response to this question think about the following:

a) What did we learned in Module 1 about the ethical code of conduct in conducting psychological research.

b) Does the end justify the means? Essentially, was the research gathered by these experiments more important than making sure they were conducted ethically. We touched on this concept of “end justifying the means” when learning about Kohlberg and Heinz’s Dilemma. Are the results of each experiment relevant to our society today? If so, how? If not, why not?

The management of Arturo’s Water Park is developing an advertising campaign to communicate the intended message, “Your kids will love you more if you take them to Arturo’s Water Park.” (a) For a print ad in this advertising campaign, suggest some wording for the copy in the ad. Then, describe your suggestions for the artwork in the ad. Which of these two parts of the ad – the copy or the artwork – would likely be more effective in communicating the intended message? Use course material to justify your reasoning. (b) For the print ad you described in Part (a), describe a pretest that would be appropriate. Explain why pretesting is important in advertising. (c) If Arturo’s management uses market segmentation to target this print ad, what is the segmentation variable it should use? Explain your reasoning. (d) Design an experiment to test whether or not this print ad is effective. Describe the test group and the control group of the experiment, and describe the time course of events. What is the dependent variable in your experiment? Explain why both the test group and the control group are necessary for this experiment to have validity.

Included in the December​ 31, 2016​, inventory of the Top DogTop Dog Supply Company are 2,500 deluxe ring binders in the amount of $6,752.

An examination of the most recent acquisitions of binders showed the following​ costs: January​ 26, 2017​, 1,900 at $2.86 each; December​ 6, 2016​, 1,700 at $2.76 each; November​ 26, 2016​, 2,000 at $2.45 each.

What is the misstatement in valuation of the December​ 31,2016​, inventory for deluxe ring​ binders, assuming FIFO inventory​ valuation?

What would your answer be if the January​ 26, 2017​, acquisition was for 1,900 binders at $2.48 ​each?

What is the misstatement in valuation of the December​ 31, 2016​, inventory for deluxe ring​ binders, assuming FIFO inventory​ valuation?