Any step followed by a code refers to a specific skill in one of the rubrics. Use this overflow can for the experiment. When you remove the tape, you should see something like the drawing here. Answer: When the upward force acting on the bottle is more than the downward force acting on the bottle then it will float. Now, place your wood cylinder in the water. Question 25: When the density of an object is less than the liquid in which it is immersed then the a object sinks in the liquid b object half floats and half sinks c object floats on the liquid d none of these.
Question 17: The least count of the given spring balance is a 1 gf b 2 gf c 5 gf d 20 gf. Answer: The relative density of a substance is the ratio of its density to that of water. Weigh the block of wood on the scale. T7 Decide whether your assumptions and experimental uncertainties can account for any discrepancy between the predicted and measured value. These errors would cause inaccurate values of the measured weight and a false value for the volume of the metal sample. Make a reasonable judgment about the hypothesis based on your experimental outcomes, the assumptions you made, and the estimated uncertainty. Judge the reasoning that led to your prediction.
The length of string was constant in all 3. All liquids and gases are fluids. As the density of glycerine is more than the kerosene the loss in weight of a body in glycerine will be more as compared to kerosene. It is then weighed by immersing it fully, in each of the given vessels filled with water. Indicate the force on your diagram that equals a force measured by one of the pan balances. Then the holes have been taped over, and the bottle has been filled with water and the lid left off.
Answer: The downward force is due to the gravitational attraction of the earth. Indicate the force on your diagram that equals a force measured by one of the pan balances. Using a cylinder, two pan balances, and a beaker of water, collect data to test the mathematical relationship between the buoyant force and the forces you measure directly from the balances and Archimedes' principle. Now it resembles drawing b here. Answer: This is because the density of cork is less than iron nail, it is also less than water density.
Make a reasonable judgment about the hypothesis based on your experimental outcomes, the assumptions you made, and the estimated uncertainty. Answer: The recording of the readings needs lot of precision and the least count of the objects used should be the minimum. Dependent Variable: In accordance to. The weight indicated by the spring balance will be a least in vessel C b least in vessel B c least in vessel A d equal in all three vessels. Identify the hypothesis rule to be tested.
Also, the weight of the string does have a slight effect on the apparent masses found when the object was submerged in the fluids. Question 2: The fluid among the following is a air b tap water c oil d all of these. If your object sinks, but isn't completely submerged by the water, your results will not be accurate. Do your observations support it? By filling the submarine's ballasts with water or air to submerge or rise. When the block is vertical there is less surface area than when it is horizontal. Air has a density far less than water, so on average, the cruise ship has a lower density than water.
Add water, as needed, so that all holes are below the water surface. Archimedes' Principle of Buoyancy: A Testing Experiment Purpose To design, implement and report on a testing experiment with a minimum of guidance ie, to conduct a reasonably authentic scientific investigation. What happens to the weight of a body when immersed in water? Problem Solving~ Number 1 Number 2 Number 3. He finds that there is a maximum apparent loss in weight of the body when a it just touches the surface of the liquid b it is completely immersed in the liquid c it is partially immersed in the liquid d it is partially immersed and also touches the sides of the container. Answer: The buoyant force acting on an object immersed in a fluid depends on the density of the fluid and the volume of the fluid displaced by a body. Identify the assumptions made in making the prediction. Age: High school and up Time: 2 hours Safety Concerns: None Independent variable: Density of the object Dependent variable: Milliliters of water displaced Controlled variable: Amount of water the object is submerged in You step on board a cruise ship ready to embark on a vacation to the islands.
What does this behavior indicate about the water pressure in the bottle at the level of the holes? Note down the new mass displayed in the digital balance. Which one will you prefer to determine the density more accurately? Repeat this process with two more of the fluids. Make a prediction about the outcome of the experiment based on the hypothesis. The gravitational force will be greater than the buoyant force. The density of glycerine is 1. Draw a labeled sketch of the experimental set-up. Materials Required A spring balance, a metal bob, a cotton thread, an overflow can, a glass beaker, tap water, salty water, an iron stand.
You drive to your oceanside home, where you notice the empty bottle on the car seat. Using the mass and volume, we calculated its density. Now calculate the gravitational force acting on the water. Record the outcome of your experiment, including a data table and these calculations: 1. Answer: The magnitude of the buoyant force depends on the density of the fluid. Answer: While swimming, water fluid , exerts an upward force on the body this is called upthrust or buoyant force, because of this buoyant force we feel light.
We also determined that it is necessary to used hydrometer than measuring the masses because due to errors of triple beam balanced and improper usage of vernier caliper. Using formulas provided the actual density of object was calculated as well as the apparent mass in water. What are experimental uncertainties in this experiment? Make a prediction about the outcome of the experiment based on the hypothesis. Each experiment involved the use of the photogates and picket fences to measure the initial and final velocities of both carts when they collide. Density formula If the weight of an object is greater than the weight of the water displaced, the object will sink. Answer: Yes, fluids exert pressure in all directions. Answer: The stone when immersed in salty water will displace water with more mass than as compared to the tap-water density of salty water is more as compared to tap-water.