Abstract In this experiment we were handed 3 different tools: vernier caliper, micrometer and vernier height gauge, and asked to find precise measurements of different objects. Some of the objects where a screw, a solid sphere of steel, and a hollow sphere of steel. Then after we had all of our measurements we supplied drawings of each item we measured. Procedure 1. Perform the measurement on a set of parts using different instruments; 2.
An object’s mass is the amount of matter it contains. The mass of an object can be measured with a calibrated scale like the one shown in the Gizmo. Drag the first object onto the Scale. (This is object 1.) What is the mass of object 1?
Notice that the angle of incidence at the first surface is equal to the angle of refraction at the second surface. Prove algebraically (using Snell’s Law twice) why this is true. n1sin θ1=n2sin θ2 n2sin θ2=n1sin θ3 n1sin θ1=n1sin θ3 sin θ1=sin θ3 5. Do different colors refract at different angles? No, difference colors do not refract at different angles.
What pieces of laboratory equipment would you use to measure the properties needed to determine the density of a substance? The piece of laboratory equipment needed to find mass is a balance and for volume a graduated cylinder. 3. Using the properties stated in question 1, write the formula for density. D=m/v 4.
Using the same electronic balance, the average mass of five copper slugs, in grams, will be determined. Lastly, by using the electronic balance again, the weight of two different unknown weights, in grams, will be determined by the weighing by difference method. Using both the direct weight and weighing by difference techniques, the weight of the copper slug (2.98 g) and the two unknown weights can be fairly accurately determined using the centigram balance. However, since the electronic balance can determine mass out to three decimal places, the electronic balance was more accurate weighing the copper slug (3.022 g) than the centigram balance using the direct weight and weighing by difference methods. Determining the mass of the two unknown weights (unknown weight #1 and #2) was determined using only the centigram balance using the weighing by difference method.
Q3W7 Classroom & Quiz Essentials! Energy Unit– I can do these things! 1. What is energy and what unit do we use to measure energy? JOULES=1 newton of force moving an object 1 meter.
Although the data are slightly right skewed, because of the large sample size(n=152) our inference on the mean is valid, by the Central Limit Therom. The Box Cox plot suggests a power transformation using a power, p= -0.5 would make the data more shaped like a normal distribution. The Normal Q-Q plot shows the transformed data points lying close to the straight line and the box plot of the transformed data looks symmetric with two outliers. The numerical summary of the transformed data confirms that the transformed data are symmetric (mean=1 and median=1). A Shapiro-Wilk test on the transformed data provides no evidence against the transformed data having come fro a normal distribution (P-value=0.4286).
Remember to dry off the cubes once you get them out. 4. Create a chart (B) in your data section with 7 columns; see data section for how to create it specifically. 5. Weight each cube on the Triple Beam Balance and record its Mass.
When comparing the two different materials on a graph the slope of the line gives an indication of the average (mean) extension at a given force for both the low-density Polythene and the high density Polythene. The low-density polythene stretched and broke faster due to the fact that it had less monomers and bonds compared with the high-density Polythene confirming my hypothesis. Both the low-density Polythene and the high-density
Sarah Whelan, Danielle Zahren, Blake Ulrich AP Physics 11-2 Mr. Shoppe 6 September 2014 Density of a Solid Objectives: The purpose of this lab was to practice measuring, graphing, and calculating with proper significant digits. Also, we conducted this experiment to determine the density of an unknown object, graphically. Background: Prior to completing this experiment, I knew that density was defined as the degree of compactness of an object. I also knew that density was measured inmassvolume. Therefore, I knew that the unit of density was gmL or gcm3.