Introduction
In the lab “Gravity Demos,” the common objective is to learn more about gravity and the center of gravity by performing various experiments. The definition of gravity is an attraction between any objects that have mass. Every planet has a gravitational pull, for example, earth’s gravitational pull is 9.8 meters over seconds squared (9.8 m/s2). This means that a bowling ball and a feather would fall at the same speed and hit the ground at the same time if there wasn’t air resistance (a force that slows down objects that move through the air.)
In the lab, there were six experiments that needed to be tested. The first one was balancing a pencil, the prediction I made for this is it will take me fifteen times to balance the
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This is because the cap adds more weight to that one side. Before I was able to realize this, I had four unsuccessful attempts, making my fifth attempt my final try. This occurred because of physics, sinc the weight of the pen is uneven due to the cap, one side of the pen is getting pulled more than the side without the extra weight. In the second experiment, it took my four attempts to balance the paper. One thing I had noticed is the paper bent in the middle where my finger was. Since my finger wasn’t centered correctly for three out of the four tries, the paper was being pulled to the right side (the side that had more paper). The third experiment was harder than it sounded. I first believed I would end up falling but instead I wasn’t able to move my left leg upward because in order to keep my body on the wall, I had to use all my strength to stay against the wall. I noticed whenever i tried to move my leg, my face would fall away from the wall. The fourth experiment was the balancing of the broom. In this experiment, you had to be able to move the broom left and right, in a way, you had to work the broom into the floor. It took me eight attempts to balance the broom. Physics is involved because you had to be able to create a balanced force (making each side equal in bristles). The last experiment was the balancing of the soda cans. My prediction is correct, I said the can with the water would be the only can that was able to balance. The empty can wasn’t able to balance because there was no weight that would make it stay. The gravitational pull was greater in the water can than it was in the empty can because the weights were different. In the can that held that water, when it was balancing, the water was being pushed to that corner, making that side heavier, causing it to easily
Data Analysis Does the mass of a pinewood derby car affect the speed? If the mass of a pinewood derby car affects speed then the more mass the car has, the faster it will go. The procedures for the experiment were; Go get a pinewood derby track, car, scotch tape, quarters, and a timer. Set up the track. Make the derby car with the instructions included with the kit.
Summary of “Forces on a baseball” by NASA.gov The article, “Forces on a baseball,” by NASA.gov, presents the facts on what makes a baseball fly threw the air a baseball. NASA.gov presents readers with the facts and breakdown drag,lift and weight, while explaining the air and temperature can affect how high and far the ball goes. The article references Newton’s first law of motion, “According to Newton's first law of motion, a moving baseball will keep moving in a straight line unless it is affected by another force.” As the article concludes, the author highlights that if the ball is perfectly round and smooth, its center of pressure will be exactly in the middle point.
In lab 3.1 we took a look at attentions and how different task require different amounts of attention for certain tasks. When a secondary task is added the participant has not done before or is difficult, it task away attention or “ space” for the primary task. For this lab we wanted to see how our walking would change when our attentional demands changed with the addition different task to perfumer using a tennis ball. In condition one the participant was asked to walk across the room (there and back) for a total of five trials.
I had Denim stand with his right foot in front of his left with both arms down by his side. I then asked if he had any medical conditions that would prevent him from completing the test, which he replied, “No, I do not.” I then explained and demonstrated the test while Denim was in the starting position. During my demonstrating, Denim fell out of the starting positon once. After I completed the demonstrating, I advised him that he could begin.
The student and teacher were placed in separate rooms and an instructor was placed in the same room as the teacher. He would then attempt to convince the teacher to continue the experiment even if the student starts crying out or wanting to leave. The teacher was required to “shock” the student if they said an incorrect answer. However, the ‘shocks’ became more intense and came with each incorrect answer. They eventually started getting very dangerous and potentially life threatening.
The actual experiment will be carried out four times, with each time a different group member will be the experimental
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.
Manipulation is demonstrated through the combination of
" When he finally got to the corner where the yellow paper was he had to put his head in the indentation so he can lowered his body toward the paper then he had to lower his
In the Penny Boat Lab, we made a boat to hold pennies in water. First, we collected materials we needed which were scissors, a ruler, water, pennies, aluminum foil, a triple beam balance and a container. Using the ruler, we measured the foil 15cm by 15cm, then cut excess pieces. Next, we had to fold the foil into a “boat”. After, we measured the mass of our boat using the triple beam balance.
Mickey Ngobeni Research Question: Is the movie ‘Gravity’, according to Newton’s laws and physics in general, accurate? Introduction: ‘Gravity’ is a sci-fi, techno-thriller movie that has its plot’s setting based in space. Astronauts (main characters: Sandra Bullock as ‘Dr. Ryan Stone’ and George Clooney as ‘Matt Kolwaski’) are sent into space, yet encounter a series of events, most of which is susceptible to occur in outer space (Foogray, 2015). Questions have risen as to how accurate the movie is according to physics and Newton’s law, and many have been answered.
The Glider kept going in circles, most of the time. We didn’t expected the paper airplane to go in circles. We think that it was the way the air was blowing and the tip of the paper airplane, that caused the plane to go in circles. The tip of the plane was heavier, than the other planes, so gravity was pulling it down.
This experiment has to be carried out carefully
Conclusion In conclusion my hypothesis was right and the wet bread grew the most (and only) mould. I can logically assume that the more moisture the bread has, the more mould it will grow. This was a fair test because each of the bread pieces had equal time to grow. The End In this experiment the conductor finds out that mould needs moisture thus needs to be included to conduct the experiment.
It is the Earth's mass that causes it to have gravity, and so in order to not have gravity the Earth would have to not have mass But if the Earth didn't have mass, it wouldn't be there