Friction Lab Report

The number of drops a penny can hold is affected by the type of liquid. Will the number of drops on the penny until it overflows change if I change the liquid from water to sodium chloride water and by how much will it change? To investigate this, there needs to be variables that are not changed when experimenting. The penny is the dependent variable because it depends on the number of drops to overflow and the drops of the liquid the independent variable as it does not change or depend. The controlled variables include using the same penny, applying the same amount of pressure on the dropper for each drop, the height of the drop that is falling onto the penny, and using the same dropper. The independent variable is changed from

As a result of this lab experiment, the hypothesis is attested to be precise as the ionic compounds did go through a double displacement reaction. The purpose of this experiment was to establish what occurs when two pairs of compounds react with one another. The information collected while doing the lab has allowed more knowledge to be obtained, as one can visibly see the changes happening and different signs of chemical changes. The cations and anions in the ionic compounds have successfully exchanged places with one another, creating the compounds with the different properties evident in the observation given. For example, precipitates were visible in almost all reactions in this experiment. Therefore, this lab experiment was held to demonstrate

1. For this experiment, what were the independent variable and the dependent variable? What were the constants?

The Velocity Step Test measures gain and the time constant of the VOR by quickly changing the velocity of the chair when rotating left and right. Pre- and post-rotary nystgamus are measured at time constants of 60 and 240 degrees/second. Pre-rotary nystagmus time constant is measured during the 60- and 240-second velocity times and post-rotary nystagmus is measured during the 60- and 240-second stop times. The reason for using 60 degrees/second is to estimate the time constant and gain for the left and right horizontal canals. As the velocity increases, the time constant decreases and a percentage of VOR gain for the right and left can be compared. The test begins by accelerating the patient around 100 degrees/second2 stimulating the right peripheral system. The patient is spun to the right until maximum velocity is reached at 60 or 240

This science fair project will test which antacids are most potent in neutralizing lemon juice. When an acid and a base combine the base will neutralizing the acid in a chemical reaction; this is how antacids work as well. Antacids are substances that will neutralize stomach acidity which in return relieves heartburn, indigestion, or stomach pain.

The dependent variable was the distance each plane flew, this was measured in inches using a 16 foot tape measurer. There were three controlled variables, the first was the size and weight of the paper airplanes with the paper clip attached, I used the same size paper, paper airplane design, and the 28mm paper clip for each plane. The second starting position where I stood, I marked a designated position to stand at and threw the planes with my right foot at the starting line each throw. The final controlled variable was how the planes were held and thrown, I held each plane at the center of the plane and threw with my right arm.

Due to the training phase consisting of different coloured balls being thrown at the catcher, the participant had to critically focus on what colour was being directed towards them. This caused the participant to block out background noise and direct their focus on the ball. The participant also had to direct their focus strictly on the thrower as they had to wait for the cue to turn around and catch the ball. From the training phase, the participant was able to improve regarding relevant cue detection, which increased the percentage of successful catches in the

I think there are some cool experiments with football. One of the experiments is, How far can you throw a football. To do this experiment you need 6-10 days and about $20-$50 to buy all the stuff to do this experiment. There is another cool experiment with football it is, How far can you kick a football.

During this lab, my partner and I had to figure out what our variables were in order to start the tests. Our independent variables were mass, surface area, height, and the force applied. Our dependent variable was the amount of time it took the object took to reach the ground. Lastly, our control variables were the type of object, height, planet, force, temperature, and air resistance.

Independent variable: We will change the amount of drops of Hydrochloric acid added to the Amylase. ( 5 drops, 10 drops, 15 drops)

The independent variable for the experiment was the paper towels. The dependent variable was the absorbency and strength. The constants for the experiment were the size of the paper towels that were used, the amount of water, the size of the beaker, the size of the cylinder and the amount of the weight.

* In every experiment there are variables that affect the way an experiment will go. The three types of variables that are measured are Independent, Dependent, and Controllable variables. In my experiment the Independent variable is the three different models of paper airplanes that I have chosen to make and experiment with. The Dependent variable includes the distance the paper airplane goes. The Controlled variable is me making sure that I throw the paper airplanes from the same starting point a well as the same weather conditions. The controlled variable is the one that cannot be changed because it would affect the other two variables. In this case I threw them in my house since I have a very long hallway that leads into the front family room and there is no furniture that would interfere with the results.

In America, tens of millions of people watch the sport of football. Many of these viewers tune into the National Football League (professional) or NCAA football (college) every weekend to watch their favorite teams compete for victory. Football has been one of America’s favorite pastimes since the early 20th century, and its popularity has been growing stronger ever since. Everyone from children to the elderly has at one time either played or watched a game of football, and the game has bridged many gaps in American society. Being the most popular sport in America has its flaws, and there have been many questions and concerns when it comes to how fair gloves are in football.

The car will change its speed when I change the incline of the ramp. I am changing the incline of the ramp to see and how the speed changes.

The main objective of this lab was to measure the friction force it takes to start moving a weighted block across a table, and as it continued to move. This force was tested experimentally in three separate ways. The force was then solved graphically and mathematically through six different runs per method. TALK ABOUT RESULTS HERE.