The goal behind this experiment was to estimate the distance a ball would travel after it falls a certain distance and bounces off a metal plate which has an angle of 45 degrees. To find this we had to take the basic equations for kinematics which are (1/2)at2=x and v=v0+at and combine them to make an equation that will help us solve for the distance the ball will travel after hitting the bounce plate. The equation came out to be R=g*(sqrt(2)/sqrt(g))*(sqrt(H)*sqrt(h)), as that g is acceleration of gravity, h is the height of bounce plate, and H is the height of where the ball will be dropped. After completing this experiment the result was that the standard deviation was +/- 2.3 cmfrom the average value of 26.5cm. This was used for each variable H was 20cm and h was 20cm. Also there 18 trials performed as well.…
| LabRepQuiz010 Question MC #7: Which of the following is the best written sentence that includes the information below taken from an article written by Dr. Costanza, but avoids plagiarism?…
1. The dependent variable is the rate of the growth of the plant and then the independent variable would be the time of day that she waters the plant.…
Observations: The color changing process took longer than we had expected. We observed that after putting the penny in the beaker, the zinc powder surround the penny, which helped it changed its color. We couldn’t complete the experiment so when we took the penny from the beaker, the change in the color wasn’t completed. There were some dark spots and some light parts.…
For the hypothesis it would be : If the angle is 32°, then it will make the object move through the air because 32° is a higher launch than 25°. So for this we would have the materials pencil, paper the angles, and the catapult. The materials for the catapult would be 2 soda cans, a fork, a couple of rubber bands, and a cap.…
The overall goal of experiment four was to determine the identity of unknown cations presented to the student. But in order to know the identity of these unknowns, in part 1, Ag+, Pb+, and Hg22+ were presented to the student in aqueous solutions and then precipitated through experimentation. In part 2, the same procedure was enacted to determine which substances precipitated through qualitative analysis. Solubility rules were also a major theme as solubility is important in determining whether a reaction will produce a precipitate.…
|Light Condition |Final pH |Water Movement (GROUP |Water Movement (CLASS |Photosynthesis Rate |Photosynthesis Rate |…
The first step to conduct this experiment is to set up your ramp, whether it is a pool noodle or flexible pipe insulation. Adjust the ramp to the correct height you chose for this investigation. Next, place the 4 textbooks exactly 84 centimeters from the wall. Then place the cup exactly 40 centimeters from the 4 textbooks. Now it is time to start the actual experiment. Take your marble and place it at the top of the ramp. Let the marble roll to to end of the ramp and record whether or not the marble landed inside of the cup. Repeat these steps adjusting the height of the ramp as you go depending on where the marble lands. The data was used to determine what height was the best for the marble to land inside of the target cup. The data was analyzed by comparing the different heights to the number of times the marble landed in the target…
The cold pressor test is done by having the subject submerge their hands in a bucket of cold water to determine cardiovascular changes such as blood pressure and heart rate. For this experiment we wanted to know how long participant can keep their feet in the bucket of ice water before they experience any pain while looking at neutral and positive pictures and also rate the intensity of their pain. For this reason we hypothesized that, if participant submerged their feet in a bucket of water while looking at the positive stimulus, it would take them a long time to experience pain and will keep their feet in the bucket of ice for a long time than when participant are looking the neutral stimuli while they have their feet in the bucket of ice, we also hypothesized that heart rate will increase the longer participant keep their feet in the ice water. The null hypotheses was that, if participant submerge their feet in a bucket of water while looking at positive stimulus, it would take them the same amount of time to experience pain as when they are looking at the neutral stimulus and that heart rate will stay the same throughout the experiment…
3 Watch each part of the experimental demonstration and make preditions about wht will happen in each scenario . Record your preditions and observations in the Data an Observations section of your labatory report format.…
In the article “How Boys Become Men”, written by John Katz, he analyzes situations he experienced while growing up. Katz believes that boys become men by not showing fear or feelings and not ratting on others. As in the novel, The Other Wes Moore, both Weses are forced to become men at an early age. They experience events that push them to make decisions that make them grow and think like men do. Katz details the maturation process for boys, as the book, The Other Wes Moore, does with both Weses. They make decisions and take actions to mature and become a men.…
2. Explain how to focus a microscope using the high power lens. Include any safety issues you need to be aware of.…
PURPOSE: The purpose of this experiment is for the students to get a better knowledge with the laboratory tools and techniques. This experiment taught me how to convert between SI units and standard American units of mass, length, temperature, volume and time as well as how to measure the units. Students become proficient in laboratory techniques such as measuring temperature and volume and calculating within them.…
I started figure skating when I was 8 years old. I went to a birthday party at an ice rink, and signed up for skating shortly after. More advanced skaters filled the middle of the rink, doing spins and jumps. I fell in love the sport. I like how it was good for both summer and the winter. The feeling of you gliding around the ice in fun-filled strokes was amazing. My classes were amusing and I loved learning new things.…
In unit 7.3 the experiment tested the ability of lactase to specifically bind and interact with lactose compared to maltose. In unit 7.4 the experiment tested the role, if any, that metal ions have on the activity of lactase. My hypothesis for unit 7.3 was knowing that lactase is specific for lactose, lactose will separate into galactose and glucose, as maltose will not change (153-155). Lactase should like lactose. For unit 7.4 my hypothesis was that EDTA will remove the ions, and will not work.…