PHY 113: Speed of Sound- Resonance Tube Student’s name: Ilian Valev Lab partners: Jayanthi Durai‚ Susan Berrier‚ Chase Wright Date of experiment: April 15‚ 2010 Section SLN: 17742 TA’S name: Alex Abstract: This experiment tried to determine the speed of sound waves. To determine the speed‚ a resonance tube full of water was used and two different tuning forks of known frequency. Each fork was struck above the water
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How road safety has changed over the years Why Speed Limits Have Changed During the last 100 years speed limits have changed in the UK‚ now in residential areas speed limits are generally 20mph to 30mph and on main roads the speed limit is 40mph. On the motorways the speed limit is raised to 70 mph. The first speed limit was 1865; this speed limit was 2mph in built up areas such as cities‚ towns and villages. This was then raised to 20mph and large fines were put in place for speeding and
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Differences in Mental Rotation Abstract The general research topic for this were the sex differences in mental rotation. Twenty- five female students and five male students were assigned to different treatment conditions and were tested on their response time and accuracy in the different mental rotation conditions. It was hypothesized that lateralization between genders would effect the results based on stimulus type. Males were expected to perform better‚ both in accuracy and speed‚ with regards
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wondered why do we have speed limits? Or maybe you do and you’re the grandma driver that everyone is stuck behind in a no passing zone. Everyone has their own speeds so why shouldn’t you be able to go how fast or how slow you wanted to go. Should we strike down every sign that the government has put up to regulate the speed limit in the thousands of highways around the country? And should we trust the driving ability of each and every person to drive within a reasonably safe speed? People automatically
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performed to investigate the effects of temperature on the growth rate pine seedlings. Experiment 1 A batch of 60 pine seedlings (Batch I) was grown in a greenhouse under controlled temperatures. Ten plants were grown at each of six temperatures from 50 C to 300 C. These plants remained at their original temperatures 24 hours each day for two weeks. All other conditions were the same for all seedlings. The growth rates are shown in Table 1. Table 1. Growth rates for pine seedlings in Batch I Experiment
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between temperature and light absorbance. The higher the temperature of the water surrounding the beetroot‚ the more coloured the water around the beetroot was. This is shown in the graph by: at 0°C‚ the water surrounding the beetroot was fairly pink and had an averaged amount of 0.074 absorbency. At 80°C‚ the water surrounding the beetroot was very pink almost red‚ and had an average of 0.982 absorbency. Conclusion The hypothesis was that beetroot left to diffuse at a higher temperature will have
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SPH3UC – Lesson 1 1. A) Amplitude is the distance between the equilibrium and the maximum displacement. In this wave‚ it would be from the equilibrium to the top of the crest or bottom of the trough. B) C) Speed: m/s Frequency: Hz D) Speed: because speed is constant and not affected by the change in frequency. Wavelength:0.4 Hz. 2. In transvers waves the motion of the particles is perpendicular to the direction of the energy. In longitudinal waves it they are parallel
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purpose of this lab‚ it is quite useful to fully understand the following terms: optical rotation and carbohydrate. Optical rotation is measured by a polarimeter‚ which measures the polarization of light and the rotation of polarized light (influenced by enzymes). It is dependent on the concentration of sample‚ temperature‚ length of the tube and the observed rotation. The +/- degrees of the optical rotation determines the presence of d- and l- enantiomers. Finally‚ a
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The goal of this experiment was to explore how temperature would influence the rate of cellular respiration of beans. It was hypothesized that as the temperature of the beans increased‚ the rate of cellular respiration would increase as well. In this experiment‚ the independent variable was the temperature‚ which gradually increased as time went by‚ and the dependent variable was the rate of cellular respiration‚ which was shown by the change in the amount of CO2 and O2 in the container. During the
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apply to the performance problems at the Hovey and Beard Company. 2. Analyze the performance problems using the "performance diagnosis model" in Chapter 7. 3. Note: Do not answer the questions after each part of the case‚ although they may help you form your answer. 4. Remember to organize your answer well and write concisely because there are many points you can raise about the Hovey and Beard Company case. Case 6:1 The Hovey and Beard Company manufactured a variety of wooden
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