Hoo Sze Yen Form 4 Experiments Physics SPM 2008 CHAPTER 1: INTRODUCTION TO PHYSICS 1.1 PENDULUM Hypothesis: The longer the length of a simple pendulum‚ the longer the period of oscillation. Aim of the experiment: To investigate how the period of a simple pendulum varies with its length. Variables: Manipulated: The length of the pendulum‚ l Responding: The period of the pendulum‚ T Constant: The mass of the pendulum bob‚ gravitational acceleration Apparatus/Materials: Pendulum bob‚ length
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15C-1 The Lease Pumper’s Handbook Chapter 15 Enhancing Oil Recovery Section C SECONDARY RECOVERY C-1. Secondary Recovery. In simple terms‚ secondary recovery is the addition of basic water flood or gas flood (i.e.‚ pressure maintenance) as a continuous force. Secondary recovery methods should be introduced very early in the life of a field while the income and profits from the wells are high enough to pay for the additional equipment and installation costs. As noted in the following sections‚ there
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find the mass of 30 cm of the ribbon. 3. Using stoichiometry and the ideal gas law‚ calculate the mass of magnesium metal needed to collect exactly 40 mL of H2 gas from the reaction given. Make sure to use current temperature and local barometric pressure. 4. Calculate the length of magnesium ribbon using the mass you found in step 3. 5. Cut the length needed of magnesium ribbon. 6. Obtain about 25 cm of copper wire
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determining the volume of a known amount of gas (H2) at a measured temperature and pressure. Determination of Whether Boyle’s Law Applies to Air Boyle’s Law states that for a fixed amount of gas at constant temperature‚ the pressure of the gas will vary inversely with the volume so that P ∝ 1/V or PV = a constant (if n and T are constant). To determine whether this relationship holds for a mixture of gases‚ the pressure of a fixed amount of air (which is a mixture of gases) will be measured as the
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the name of NGV. If compare NGV to other quality fuels that are currently in use. One will find that the NGV really stand out from them all in the sense that it preserve environment and is 50% cheaper With it’s quality as gas and pressure as high as 200 Bar or approximately 3000 Pond per square meter‚ to be compress into the different sizes tank according to the suitability on usage. The safety of the tank containing NGV gas is very important‚ each of the tanks has to be according
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the tube. Its height adjusts according to the air pressure on the reservoir. The column of mercury is shorter on a mountaintop as there is less atmosphere to exert a force on the mercury reservoir. On a mountaintop‚ the air pressure is less‚ so the height of mercury it balances in the barometer is shorter than at sea level where there is more air pressure. The pressure of mercury is its weight (force) per unit area. The weight‚ and thus the pressure‚ of the mercury column is directly proportional to
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relationship among the complete pressure and capacity of gas‚ if the temperature is reserved in stable within a closed system. The mathematical expression for Boyles Law is: V=K(1/P) or PV=K (Constant T and n) Where‚ P and V are the pressure and volume of the gas sample respectively. K is a constant and dependent of the temperature (T) and the amount of gas (n‚ moles). The Graph below successfully indicates Boyle’s Law visually: A: Volume Verses Pressure B: Volume Verses 1/P Part
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usually cubic metres (m3)‚ e.g. 200 mg/m3 or using ppm without any reference‚ e.g. 140 ppm Please note Because of the variation of a gas volume with temperature and pressure changes it is necessary to use one of the following alternatives for describing a concentration value: additional specification of gas temperature and pressure values existing during measurement or conversion of the measured concentration value into the corresponding value at standard zero conditions‚ see the following chapter
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September 16‚ 2010 Parental Pressure on Teens In the movie‚ American Teen‚ there were many types of parental pressures shown on teens entering college. This is a negative trait because more often than not‚ this leads the teen in the wrong direction or results in the teen making poor decisions. According to the PewResearchCenter‚ only nine percent of college students think that they need more parental pressure. In life‚ emotional‚ traditional and financial pressure will have a negative impact on
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slop of the pressure/volume(P/v) diagram‚ near the start‚ in the middle and at the end of the compression. 2. To determine the indicated work/cycle of the compressor from the P/v diagram. Where: Work/cycle=(m.e.p) x (piston-area) x stroke And m.e.p= mean effective pressure= average pressure(i.e stroke of the compressor) 3. To determine the volumetric efficiency of the compressor. A pressure transducer is used so that a potential drop will be created for a change in pressure. A similar
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