Volume Three

Analysis and Evaluation: 1. Using class data, for each part of the lab, describe the changes in mass and support the description with quantitative data. Compare your results from Part A with your results in Part B. Suggest a reason for the differences. Hint: your answer should discuss the difference between open and closed systems. [T, 4]

In our experiment the question we were trying to answer was “Does a physical change, change the mass of an object”. This means that when you take a tablet or clay and you crush it or alter the shape of it and it does not weigh the same after then the weight of the object did change and that would answer your question. When a physical change occurs it is not forming a new object it is just changing the way it looks or changing a solid to a liquid such as ice melting. During our experiment we took

10mL of water and then weighing the water on an analytical balance to find the density by dividing the weight over the volume. I knew the density of the water at a certain temperature and compared that to my data to see which was most accurate. The next part of the experiment was to find the density of a sugar solution. I did this by mixing a certain mass of sugar with a certain volume of water until it reached a solution of 50mL. I then obtained 10mL of this solution with a volumetric pipet and put

the conclusion that the Mountain Dew floated on top of the water because it was less dense than the water we put it in. “A Fish Full of Folly” video says that when you compare two objects that have either different masses or different volumes, they will have different densities. This density is what will tell you whether an object will sink or float in the liquid you put it in. If an object has a smaller density than the liquid you put it in, the object will float. If it has a larger density

city is as follows: For the first kilometre, the fares is Rs 8 and for the subsequent distance it is Rs 5 per km. Taking the distance covered as x km and total fare as Rs y, write a linear equation for this information, and draw its graph. Find the volume of a sphere whose radius is (i) 7 cm (ii) 0.63 m 22. In parallelogram ABCD, two points P and Q are taken on diagonal BD such that DP = BQ (see the given figure). Show that: 21. (i) ∆APD ≅ ∆CQB (ii) AP = CQ (iii) ∆AQB ≅ ∆CPD (iv) AQ = CP (v) APCQ

concept of buoyancy. The volume of water that your body displaces has weight. The weight of the displaced water pushes upward on you, while the weight of your body pushes down. If the weight of the displaced water pushing upward is greater than your weight, then you will rise out of the water to a point where equilibrium has been achieved. This means that the weight of your body that is submerged in the water, let’s say from your shoulders down, is equal to the weight of the volume of water that your body

Calculus is the branch of mathematics that deals with rates of change and motion. It was developed because of the need to explain various natural occurrences within in the universe, such as the orbits of planets, and the effects of gravity. Today, calculus is the basic segment of science and engineering. Calculus allows physical laws to be expressed in mathematical terms. In science it is valuable in the further analysis of physical laws in predicting the behavior of physical laws, and in discovering

ultimately find the volume of the warehouse at that given height of the model. The derivative function of the semicircle for any height (greater than or equal to 36, less than or equal to 54) is shown below: We used this equation to generate different heights that would maximize the area of the cuboid. We were able to isolate just the area of the cuboid because that one face is simply projected backwards 150m, so we mathematically we were able to ignore that constant in the volume equation shown above

Hypothesis The objective of the density determination lab is to determine/compare the average density of pre-1982 and post-1982 pennies. This can be achieved by finding the mass to volume ratio then averaging the results. The purpose of this lab is to find out if the difference in composition of the pre and post pennies will affect their densities. Pennies made before 1982 where majority copper but pennies minted after 1982 are made with mostly zinc. With this background knowledge, we expect the

lab was to determine the effect of temperature on the volume of gas when the pressure is consistent and to verify Charles’ Law. The data from the experiment reveals that as temperature increases, so does volume. This also indicates that as temperature decreases, the volume decreases as well. Procedure 1) Select a 60 mL Syringe Sealed from the Gas Syringe item under the Equipment menu. Set the volume to 20 mL in the Initial Gas Syringe Volume dialogue box. 2) Click on the syringe and select Thermometer