The atomic radius you estimated from your graph is most likely not exactly the same as the true atomic radius of tin. There is a small percent error. What do you think caused this error? There is no way to tell from looking at the graph exactly what it would be without a point. Also, the numbers do not increase at regular intervals, so you really can’t
A part of making a measurement is distinguishing its unit, whether its inches, centimeters, liters, or meters. A number is not highly likely to stand alone with no unit following it. In science, measurements are recorded using the metric system to represents its units, for it is more convenient and much simpler than the other system that the United States has become accustomed to (Lab Manual). The metric system simplifies measurements immensely because length is always measured as meters, volume is always measured as liters, and weight (mass) is always measured in grams (Lab Manual). In this experiment, we are required to measure different substances and figure out some of its physical properties.
b) control. c) replication. d) hypothesis. Question: Which among the choices is the best answer and explain why. A scientific control is the group not exposed to the conditions of the experiment, the control is designed to minimize the effects of variables other than the single independent variable.
A null hypothesis is the hypothesis that there is no significant difference between specific populations, where observed differences are due to errors. The Hardy-Weinberg Theory is a null hypothesis and that is what we tested in this experiment. The only time a null hypothesis can be accepted or rejected but cannot be proven. It may be quantified as true, but it cannot be proven. The reason for this is because in tests like these observed differences are usually due to chance differences in sampling.
Because of the initial unsuccessful testing of the blueberry based cereal, Healthy Berry Crunch was not put through the normal testing to ensure complete customer acceptance, it did show good results in limited testing. Because of budget restraints, Health Berry has not gone through the typical UC testing. Strategically, introducing Healthy Berry as a Eurobrand is very risky. As shown in the data, cereal consumption varies greatly through Europe. From a total consumption of 8 kg/year in the UK, to only 0.5 kg/year in Italy.
Maybe back in the not yet so advanced technological days, dummies were not equipped with contact points that register the point of contact and the amount of pressure of force exerted when contact was made with the dummy and at what speed the body of the dummy traveled past the point of the abrupt stop. That being said, the use of cadavers would give that information after the crash test during the autopsy without all of that technology being available to the testing facilitators. Even though cadavers were the “better choice,” as far as results go, I don’t think that using cadavers is a moral or good ethical choice. However, how is this different from cadavers being used for medical students to practice autopsies and mock surgeries? People might say because of the violent nature of the crash test vs. “just” being cut on.
We then scratched the mineral across the finger nail and if it worked, we moved on to the next item. The next item we used was the iron nail. After the iron nail was the streak plate and lastly the piece of glass. All this relates to our mineral unit because of the way we are classifying and looking for the correct way to correlate our findings in these mineral rocks. We are using data tables to help support and also organize our findings.
Lacking the most important factor in the equation makes it impossible to know the right solution, he can only guess for the best. Catch-22 teaches us a very philosophical lesson; the right answer to some questions is not to answer one. Catch-22 tends to deal with rule. You can’t complete task A until after task B is completed, but you can’t complete task B until after task A is completed. The similarity of those two is that both are situations that decisions are made difficultly.
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 5. Use at least four (4) quality resources in this assignment. Note: Wikipedia and similar Websites do not qualify as quality resources.
In order to find out the density of the three brass cylinders, the equation Mass divided by Volume was used. The mass of the cylinder was able to be read directly from the balance however the volume was not in this experiment. In order to find the volume, the equation πr^2h was used. Uncertainty and estimation in measurement is key to this experiment because it is not easy to tell where the diameter actually is from the naked eye. One estimates the value of a digit in measurement because they are uncertain of the true value.