Lab Report Physics

Your mass precision should be reported to a thousandth of a gram, i.e. 0.302. (Use 3 significant figures.)

Weight 10 dry Post-82 pennies which get 24.91g, using 30ml initial volume measuring the volume of 10 pennies, record the data 3.2ml. Using equation Density= Mass/Volume, get the density of the post-82 pennies is 7.78g/ml. Then calculate the error%=0.04%, and the deviation%=1.60%.

This experiment was performed to observe differences in density based on the chemical makeup of an object. Pennies minted before 1982, pennies minted after 1982, and an unknown metal sample was tested to see if there were any differences in their densities. Ten pennies from each category and the metal sample were weighed using a scale to find mass and the displacement method was used to find their volumes. The masses and volumes were then used to calculate the densities of the pennies (D=m/v). The density of the pre-1982 pennies were 8.6 g/mL while the post-1982 pennies were 6.9 g/mL. The metal sample’s density was 1.7 g/mL. Following the experiment we were given the real densities of each item to calculate the percent error with the formula

I found out that both of my experiments were off by 0.46 and 0.13 but were remotely

The pennies that were dropped into the graduated cylinder could have caused some of the water to splash out of it. This may have caused an error in measuring the volume, this would have caused the volume measured to be less than the actual volume, thus allowing the density of the pennies to increase, causing the lab results to be uneven. Another source of error has to do with the mass of the pennies. After the pennies were taken out of the graduated cylinders filled with water, there was still some water droplets left on the pennies when put on the triple beam balance. This extra weight of the water may have caused the measurement in the mass of the pennies to be more than they actually were. This outcome could have caused the density of the pennies to be increased as well, making the lab results inconstant. Any type of coating, for example rust, on the penny may affect the mass. This will add to the mass making it higher, and since density is proportional to the mass, the density will be calculated higher than what it actually

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

1. How well does the appearance and solubility, of iodine and zinc respectively compare with information presented in the CRC handbook of chemistry and Physics? Our results for the appearance and solubility of iodine and zinc were very similar to the results given on the table. The only thing that was different was the result for Mineral oil.

Slope determination is a valid way to calculate density because the slope of the data and the actual slope were close in value. When looking at the slope of the graph with the points, they were all relatively close. Three of the five point were even on the slope line. The formula of (y2-y1/x2-x1) allowed the finding of the slope of the line graphed and it also allowed the comparison to the actual slope of silver. This allowed the calculation of the percent error and also to see how effective slope determination really is. The slope of silver was 10.5g/cm³ and the slope of my findings was 10.15g/cm³. The percent error was low at 3.3% which points to slope determination

I have organized seven standards underneath the forces and motion unit. For standard 2.1.4 I found an example in the kindergarten exploring forces and motion lab. Within this lab my group was asked to experiment with sending a toy car down a ramp with at first one book, then two books, and finally three books. We were asked to sketch the experiment by circling whether the car was fast, faster, fastest and far, farther, and farthest the three times it went down the different ramps. In this way we compared the results from the three trials of the experiment and measured the speed and distance of the car all three times.

The substance with the highest deviation is both metal B and metal D, both with a deviation of 1. The substance with the lowest deviation is solution C. (Data tables of Deviation shown above) The deviations show the precision of my density calculations.

The nucleus is composed of protons and neutrons. These two particle are called nucleons, and can be found in the nucleus. The protons are all positively charged and repel each other, this is called the electromagnetic force. This pushes the protons apart but they are held together by another outside force. This is called the strong nuclear force.

2. Explanation of Forces The capsule and Egg have slightly different forces acting on them during this experiment. The egg is within the capsule both during free fall and at impact. Since it is sitting on a surface within the capsule there is always normal force acting opposite to the gravitational force, which is also present and pointing down to Earth.

We tested our experiment with four books we first tested it with one book and collected it the data and then we tested it with four books it collected the data and then we calculated everything it showed that the tes with the four books showed fast time and speed and hit all the bowling pins down and far then the first experiment that only went half the way of the stick we rolled it from then it stopped. These are the data my group collected for the four book experiment Mass of Marble: 66.60 /Distance Marble Rolled: 132cm /Time: 2.7 /Speed: 48.9/ Potential Energy: 8811.18 / Kinetic Energy: 79627.3 /Distance

Our percent error 6.94% which was not as bad at the other two methods, there was not standard deviation in getting the copper because there was not average of the

In this experiment, we experimented finding the fundamental quantities of length, mass, and time using many laboratory tools. We used a Vernier caliper, stopwatch, rulerm meter stick, wooden block, metal block, Dial-o-gram, different masses, and circular objects. We took into consideration the uncertainties of many different tools and objects into our experiment. The inherent uncertainties of different measurements and ways to propagate those uncertainties were learned during this experiment.