The bessbug weighed 1.76 grams. The bessbug and the tin combined weighed a total of 2.94 grams. The bess bug took a total of 1 minute and 42 seconds to reach 6 centimeters without any weights.
Then, by holding the nose of the bullet pointing away from you, the direction the impressions run away from you (either to your left or right) determines the direction of twist. If the rifling impression pattern on the bullet matches the rifling pattern in the barrel of the questioned firearm, the next step is to measure the rifling impressions on the bullet. The lands and grooves on a bullet are measured in thousandths of an inch or in millimeters. One way to measure individual rifling impressions is to use a micrometer, or with advanced technology the majority of crime labs use a comparison microscope; which is two microscopes connected to an optical bridge which allows the viewer to observe two objects simultaneously with the same degree of
Identify the independent Variable Size of the tablet Identify the dependent Variable Reaction time List the controlled variables The solution (water), temperature, volume of water (200 mls) The amount of Alka- Seltzer How will the dependent variables be measured A stop watch will be started as the pieces of Alka-Seltzer are dropped into 200ml of room temperture water Describe the expected results if the hypothesis is true The 3 smaller pieces of Alka Seltzer will dissolve quicker than the ½ tablet .
First the ball had a small hole directly in the center and the rod had an uneven end these presented challenges for getting an accurate measurement in step III. Second the errors in the measurements were carried through and expanded by the calculations performed. The obtaining the volume via the displacement method was only one step without calculations. Thus I believe the displacement method produce better measurments. 4.
The data observed and recorded in this lab shows that the concentration of miracle gro’ does affect the growth rate and germination speed of black eyed peas. The data is shown through two graphs and two data tables. The control group in this experiment is the seeds with a 0% concentration of miracle gro’, therefore the seeds with just water. The experimental groups are different concentrations of miracle gro’ including a 10%, 15%, 20%, 25%, and 30% concentration. The variable in this experiment is the amount/concentration of miracle gro’.
This tube was not very accurate because the cannonball that used couldn’t control the cannonball as it went through the tube. The range for this cannon was nearly 1000 yards, and its accuracy was weak, but it was only used to destroy building structures for the infantry to breach a wall. During the third quarter of the 17th century, large guns came to be designated by the weight of their projectiles and secondarily by their other characteristics—i.e., whether they were field or siege types, and whether they were called light or heavy, short or long. The name cannon gradually came to be applied to every gun fired from a carriage or fixed mount and with a bore more significant than one inch (Britannica
The independent variable is the water source (lake) and the dependent variable being the amount of complete, reduced, or absent pelvic structures found in the fish. Also, the experiment contained a constant: the number of fish collected per lake (20). Secondly, the experiment contained lots of data and is
On our paper we predicted the amount of pennies that could fit in the boat before it sank. We tested the boat in the water and added pennies one by one. We then calculated the mass of pennies that fit in the boat and the density of it. The purpose of this Lab was to make a boat that holds as many pennies as possible and understand how to calculate
The essay “Science: It’s Just not Fair”, by Dave Barry, some truths about science fairs that many students have to participate in are brought out. Barry starts the essay with the beginning of the science fair project process, which is usually put off until the last minute. He sarcastically and ironically describes the process as a student who is rushing to do their project the night before the due date. Barry also includes and comments on the the ironic importance of the hypothesis and conclusion in the science fair process, showing how they usually very vague statements. He also gives examples of his wife’s and his own last-minute science fair projects that they threw together quickly before the due date.
In modern society, guns are seen as a form of control. Those who have guns are able to overpower those who do not. This trend was set when guns were first invented and has stayed the same throughout history. The one place where guns are not a symbol of power and control is in literature, specifically “The Old Gun” and Hamilton. In Mo Yan’s short story “The Old Gun”, the protagonist is a hungry boy who does not even know how to use the titular firearm.
In this experiment, the question that was asked was, are elephants afraid of mice? The hypothesis is if a mouse is placed near an elephant, then the elephant will be frightened. The experimenters traveled to an African safari to perform the experiment with their test subjects (an African elephant and a white mouse). They hid the mouse in elephant dung and rolled over the dung whenever elephants passed by. At first there was speculation that the elephants might have been startled by the moving dung.
VARIABLES: There are independent variables, dependent variables, and controls. the one that is being tested and the one that is the inconsistent variable in the Independent variable like the volume and surface area of the agar cubes. The variable that is kept consistent is the dependent variable such as the percentage of diffusion of pigment in the agar cubes. The constant variable is the features of the experiment that is kept the same throughout the entire experiment such as, the amount of time the agar cubes are left in the beaker and the amount of acid in the beaker.
Paintball is an extreme sport that has fired the imaginations of many people. It is also a sport that requires a lot of gear for a new player figure out. Perhaps the most important purchase is the gun, or paintball marker. There are different styles of paintball to keep in mind when selecting the best paintball gun for beginners. The two main types of paintball are Woodsball and Speedball.
Do you need a nail gun that delivers a lot of oomph for your next project? One of the most powerful nail guns on the market is the framing nail gun. It is a spcial type of nail gun that is best suited to nail on tough and thick surfaces. What the framing nailer lacks in precision, it makes up for heavy-duty work.
Open-open had .647m and the open-closed had .630m of distance. The tube with the least percent error and closest to the actual speed of sound was the open-open tube with a frequency of 512
