Wave Lab Objectives The objective of this experiment is to learn how to properly find the velocity of a wave using 2 different methods. Materials Meter Stick Stop Watch Wave Machine Spring Procedure Wave Machine – Method 1 1) Measure length of wave machine with meter stick and record length. 2) Count out and record how long it takes 15 passes to occur by one partner gently creating a wave on the wave machine. Tip: remember to start at 0 when you count 3) After you have recorder your data from step 4 calculate the total distance traveled by the wave. Ex.
3. Place the “R” tube in a beaker and get a large test tube, another boiling tube and a pipet. Label the large test tube “C” and the boiling tube “P”. Place one boiling chip into the “P” tube. 4.
Lab Report Name: Lab#: 6 Lab Name: Determining the Speed of Sound Objective: The objective of this lab was to learn how to measure the speed of sound. Procedure: A glass 17 cm tall was filled with water. The water was then measured with a thermometer to ensure that it matched the room’s temperature. The PVC pipe was then placed in the water, and the tuning fork was hit against a wooden block. The fork was held horizontally over the pipe and the pipe was moved up and down in the water.
The second part of the procedure holds F constant and investigates the relationship of a to m by altering the total mass of the system. Again, based on the equation a = F/m, acceleration and mass should be inversely related to each other. m = k/a and a = k/m. 2. PROCEDURE 2.1 Equipment & Materials The key piece of equipment used in this investigation is the Atwood machine.
6. Obtain a plastic foam cup to be used as a calorimeter and measure the mass carefully. Record. 7. Fill the plastic cup about half full with distilled water at room temperature and record the mass.
Density Lab Report Objective: To measure the density of different materials. Materials: 400 mL Beaker Ruler Water Triple Beam Balance Box of Density Cubes Goggles Tongs Procedure: 1. Put on all safety equipment and gather all materials. 2. Create a chart (A) in your data section with three columns.
Now, take the same piece of plasticine tied with thread and immerse it into the measuring cylinder filled with water, by holding the thread. 6. Check the changes in the water level by subtracting the final volume (Current Volume) with the initial volume. 7. Record the change in water level as the volume of the piece of plasticine.
Because of the difference in electronegativity between those town metals, redox reaction happens: Zn(s) → Zn2+(aq) + 2e- Cu2+(aq) + 2e- → Cu(s) In the comparison of voltages produced in this experiment, concentration can be determined whether it is a factor or not. Risk Assessment: Due to the electricity produced in the experiment, students should be aware of the dangers and wear gloves which are insulating. Independent Variable: Concentration of ZnSO4 Dependent Variable: EMF of the galvanic cell Controlled Variable: Concentration of CuSO4, Temperature, Pressure and Salt Bridge Material and Apparatus: CuSO4 solution 1mol/dm3 ZnSO4 solution 1mol/dm3 Distilled water Copper Bar Zinc Bar KCl solution Beaker (50cm3) Data Logger Salt Bridge Measuring Cylinder (10cm3, 50cm3) Polishing Paper Procedures: 1. Use 2 separate polishing papers to clean the zinc bar and copper bar and place them appropriately. 2.
In this case, the standard deviation of your range measurements was used as the measure of uncertainty. The variables that contain uncertainty due to human error include: the initial height h (the error was represented by the standard derivation which was 0.0005) and the variance on the final distance calculations (standard derivation are shown in Table I – Exercise 2, 0.4358899, 0.01527525 and so on). As for decimal places causing uncertainty, rounding numbers were also involved in rounding vmin, vmax and v0. As shown in Table II, the measured range is
Hypothesis : When the quails’ eggs are immersed into 0% (distilled water), 5%, and 15% concentration of sodium chloride solution, the final mass of the quails’ eggs will increase. But when the quails’ eggs are immersed into 30% and 45% concentration of sodium chloride solution, the final mass of the quails eggs will decrease. http://www.biologyjunction.com/osmosis_lab_report_sample_4_prea.htm ,visited on 30/8/2012