Does Soap Affect the Surface Tension of Water? Background: Surface tension refers to water’s ability to "stick to itself". Surface tensioncan be measured and observed by dropping water (drop by drop) onto a penny. Thenumber of water drops that can fit on a penny will surprise you. Question: How does soap affect the water’s surface tension? Hypothesis: I think that the surface tension of soapy water will be less than that of freshwater because H 2 0 has strong polar bonds‚ and when water is mixed
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[Type text] [Type text] [Type text] _An experiment on the effect of surface area to volume ratio on the rate of osmosis of Solanum tuberosum L._ BACKGROUND A cell needs to perform diffusion in order to survive. Substances‚ including water‚ ions‚ and molecules that are required for cellular activities‚ can enter and leave cells by a passive process such as diffusion. Diffusion is random movement of molecules in a net direction from a region of higher concentration to a region of lower concentration
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cut 3 potato cubes using the dimensions from above. 2. Obtain TEACHER’S SIGN-OFF BEFORE you proceed! 3. Submerge the potato cubes (cells) into the iodine solution for 20 minutes. 4. While you are waiting for 10 minutes‚ calculate the surface area‚ volume‚ and surface area to volume ratio for each of the 3 potato cubes (cells). AFTER 10 Minutes 5. Carefully remove the potato cubes (cells) from the iodine solution and place them on absorbent paper towels. 6. Cut each cell in half and observe
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SIMULATION OF RATCHETING BEHAVIOR BY FINITE ELEMENT METHOD M.Tech. Dissertation Submitted in partial fulfillment of the requirements for the award of the degree of Master of Technology by Ajit Gajanan Dongarkar Roll No. 00310601 under the guidance of Prof. P. Vasudevan and Prof. Amitava De Department of Mechanical Engineering Indian Institute of Technology Bombay. January 2003 1 Dissertation Approval Sheet This is to certify that the dissertation entitled “Simulation of Ratcheting
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indeterminate structural truss members -3-D plasticity- Yield criteria-Maximum shear stress criterion(Tresca) -Distortion Energy Criterion(Von mises) -Octahedral shear stress and second invariant of devatoric stress tensor‚ as relations with yielding criterion q y y -Equivalent yield stress and yield strain. - Geometrical representation ‚Von mises cylindrical yield surface‚ and hexahedral i ld f h h d l yield surface of T f Tresca criterionit i -Yield locus in 2-D space -Plastic stress strain law Plastic
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Industrial Training Report Report on Summer Industrial Training at Heavy Engineering Division (HED) of Larsen & Toubro Limited‚ Powai Works Prepared by Subhrajit Bhattacharya Undergraduate Student‚ Indian Institute of Technology‚ Kharagpur Roll no.: 02ME1041 Under the Guidance of Mr. N. R. Raykar Senior Manager‚ FPEX‚ HED‚ L&T Powai Works Industrial Training Report Page 2 of 47 Certificate This is to certify that Subhrajit Bhattacharya‚ form IIT Kharagpur‚ has undergone
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Surface Area to Volume Ratio and the Relation to the Rate of Diffusion Aim and Background This is an experiment to examine how the Surface Area / Volume Ratio affects the rate of diffusion and how this relates to the size and shape of living organisms. The surface area to volume ratio in living organisms is very important. Nutrients and oxygen need to diffuse through the cell membrane and into the cells. Most cells are no longer than 1mm in diameter because small cells enable nutrients and oxygen
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report primarily discusses results obtained from the conducted experiments and includes computed data from the Kingston computer program. The value of the plastic moment capacity of each experiment was obtained; Obtained value was used to find the yield strength of the structures and compare them to typical values for mild steel. The important data is summarized in a table; followed by a list of important formulae. All individual results are listed in the appendix at the end. NISHANT AGARWAL
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Copyright © 2011 Pearson Education South Asia Pte Ltd APPLICATIONS (cont) Copyright © 2011 Pearson Education South Asia Pte Ltd STRESS STRAIN DIAGRAM • Note the critical status for strength specification proportional limit elastic limit yield stress ultimate stress fracture stress Copyright © 2011 Pearson Education South Asia Pte Ltd STRENGTH PARAMETERS • Modulus of elasticity (Hooke’s Law) E • Modulus of Resistance 1 1 pl ur pl pl 2 2 E 2 • Modulus
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To investigate the relationship between surface area : volume ratio and heat loss. INTRODUCTION: The aim of this experiment is to investigate and find the relationship between heat loss (of water) and surface area to volume ratio of animals. To investigate this‚ we are going to use three flasks of different volume (as the equivalent the animals) and thus different surface areas filled with water. BACKGROUND: Surface Area : Volume Ratios We will be using the following formula for calculating
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