Year 11 Physics Lab Report

Students in an AP Physics lab perform an electrostatics experiment involving two charged spheres suspended

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.

1: Gather all the materials needed for the experiment (a meter tape, a ramp, 2 carts with wheels and without wheels, a rubbermat, 5-gram masses, tape, a triple beam balance, a calculator, and 2 other people to help you [Person 1 and Person 2]).

\parindent{\ \ \ }Figure~\ref{fig:mdg} shows the average strain at different time instants for various mesh densities. The variation in the results obtained with the finest mesh and the mesh immediately next to the finest one is less than 5\%. Hence, we can reasonably assume that the study reached convergence. The difference in results obtained from the dense mesh (i.e., mesh 6) and coarse mesh (i.e., mesh 3) is less than 8\%.

The purpose of this lab is to find the densities of three common rocks found in the Earth’s crust, basalt, sandstone, and granite using the provided materials. The prediction was that granite would appear to be the most dense, followed by sandstone, and basalt would be the least dense. The mass (g) and volume (cm³) would be needed to find the density of each of the three rocks. The method, water displacement, would need to be used to find the volume of the three rocks. In this lab, a graduated cylinder would need to be filled with 130 mL of water, and then the three rock samples would need to be added. Subtracting 130 mL to the total volume of the water would give the volume of the rock, in cm³. Each of the three rocks would also need to be measured for its mass in grams using a scale. To

In this experiment students will be examining the fluid properties of pressure and specific weight. In theory, there exists pressure equilibrium at the hinged gate, which separates the two fluids. This equilibrium allows a relationship to form between forces exerted by the fluids. Fair = Ffluid = SWfluid * Hg * Af

Physics Lab Report How does the thickness of cotton cloth affect the light intensity measured by the Coach Lab light intensity sensor? Introduction: During our physics classes, we have been focusing on astrophysics and specifically on different types of light, light in space, light intensity and how to detect and measure the light transmitted. Light intensity is the amount of energy transmitted from a light source and in this lab report I will be focusing on one particular factor which affects the light intensity measured by the Coach Lab light intensity sensor. Aim:

- It will act as a force that will completely neutralize F4. The force F4 and the resultant of F1, F2, F3 are exactly opposite of each other.

To investigate whether it would be more efficient to use LED’s in our homes rather than halogen and CFL bulbs.

For the Momentum, Energy, and Collisions experiment, my group and I weighed and placed two carts along a frictionless track, and ran three different types of collisions. In order to create an elastic collision, we used two magnetic bumpers that had the same charge. The second collision, my group and I used Velcro bumpers in order to create a total inelastic collision. Finally, for the last collision preformed, we used the Velcro and magnetic bumper to produce an inelastic collision. To record the velocities of the carts before and after the collision, we placed Vernier photogates along the beginning and end of the track. Photogate 1 recorded the velocity of cart 1 and photogate 2 recorded the velocity of cart 2. After obtaining the velocities

We were asked to look up the frequency of the different colored diodes and the results are presented in a graph.

In this experiment, the purpose was to measure the acceleration due to gravity (g) by dropping a plastic ball from several heights and recording the time intervals it took to pass through two photogate sensors and the time it took for the ball to hit an impact sensor at the bottom. The photogate sensors are the constant distance d apart, and the impact sensor is distance D away from the lower sensor. Since the acceleration due to gravity is a constant, the difference in heights from which the ball was dropped should not affect the value of g. With the data from the sensors, the position of the ball over time and velocity could be calculated, allowing me to calculate the acceleration.

In order for one to further understand the importance of solar energy, the problem of global warming must be explained. As defined by Webster’s Dictionary, “Global Warming” is an increase in the earth’s average atmospheric temperature that causes corresponding changes in climate and that may result from the greenhouse effect. With an average increase in atmospheric temperatures, our planet is slowly deteriorating. In order to stall or halt this global destruction, countries must turn to solar energy as a cleaner alternative to the depletion of fossil fuels. Solar energy creates a homeostasis for the climate. Due to its ability to decrease global climate changes, solar power can address global warming in several ways.

Solar power is one of the most environmentally benign energy sources available. Just 20 days of sunshine produces the same amount of energy as everything stored in Earth’s reserves of oil, coal, and natural gas—yet does not come close to producing the same amount of environmental damage as even one of those options (Greentips, 2005). Solar farms are a clean renewable source that can meet high energy demands and can creates thousands of jobs in the future. It is also used during peak demand for electricity. During the hottest days, the panels are absorbing more energy while homeowners have the a.c. on full blast. They can be installed anywhere

(g) The steps (c) and (d) were repeated to obtain new values of Ŝe and then step (e) to obtain a new curve III.