Background: This lab is all about finding the density of a candy bar‚ and determining whether or not the candy bar will float or end up sinking in a glass of water. In order to investigate the principles of mass‚ you have to find the volume and density for four different types of candy bars. My question is‚ which candy bar will have the least amount of density? Hypothesis: If a Twix has cookie inside‚ then it will have the least amount of density. Materials: 4 candy bars( Snickers‚ Twix‚ 3
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mass at sea level is 1 kg-force. 1-6C There is no acceleration‚ thus the net force is zero in both cases. 1-7 A plastic tank is filled with water. The weight of the combined system is to be determined. Assumptions The density of water is constant throughout. Properties The density of water is given to be ρ = 1000 kg/m3. Analysis The mass of the water in the tank and the total mass are V =0.2 m 3 mtank = 3 kg mw =ρV =(1000 kg/m )(0.2 m ) = 200 kg 3 3 mtotal = mw + mtank = 200 + 3 = 203
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approximately 200 million people worldwide and approximately 14 million people in the United States. A decrease in estrogen levels in post-menopausal women puts them at a higher risk for osteoporosis and consequently leaves them at a higher risk for bone fractures. Certain types of physical activities and exercises have been shown to slow the effects of osteoporosis. Objective: The authors goal was to use previously conducted studies to determine which types of exercises and prescriptions were most
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THE OSMOREGULATORY ABILITY IN PHASCOLOSOMA LURCA AND UCA COARCTATA Abstract Phascolosoma lurca (P. lurca) and Uca coarctata (U. coarctata) species and their organs were examined and studied to determine their osmoregulatory ability using the density of extracellular fluid (ECF) as a measure of ionic and osmotic concentration. Body fluids are denser than water which has a specific gravity of 1‚ plus solutes. Through the examination of the two organisms‚ P. lurca is an osmoconformer and U. coactarta
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retaining walls‚ earth dams‚ and airport‚ require man-placed soils‚ or fills. These soils are loose (weak) and must be compacted to increase their strength characteristics. • Soil compaction is defined as the method of mechanically increasing the density of soil by reducing volume of air. 2 General Principles • The densification is accomplished by pressing the soil particles together into a close state of contact with air being expelled from the soil mass in the process‚ thereby increasing
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OSTEOPOROSIS Osteoporosis is a disease in which bones become fragile and more likely to break.Bone mineral density (BMD) reflects the balance between bone resorption and formation.Peak BMD is reached from age 20-35 for men and women.Osteoporosis occurs when resorption exceeds formation ‚which resultant bone loss.It is diagnosed based on T-score‚with the gold standard measurement being dual energy x-ray absorpimometry (DXA)of the hip and spine BMD.A T-score is the number of standard deviations
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71°C 3. Determine the mass of the water by using the water’s density (specific to the initial temperature) and the volume of the water. Remember‚ density =mass/volume. You can look up the density of the water at your specific temperature at http://www.ncsu.edu/chemistry/resource/H2Odensity_vp.html. (5 points) Density =mass/volume. Density of water according to NCSU: 0.9972995 g/mL Volume of water: 75.0 g/mL Find mass: Mass = Density * Volume Mass = 0.9972995 g/mL * 75.0
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shall also discuss the effects these diseases would have on the everyday life of a small boned white female who is 84-years-old. Osteoporosis is a bone disease that can get worse with time. Your bones become fragile due to losing bone mineral density and bone mass. People do not realize this disease is occurring because they cannot feel their bones becoming weaker ("What is osteoporosis‚" 2011). Osteoporosis is most likely caused by three imbalances in the human body. Cause number one is a low
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may have on metabolic and whole body health. Bone and Calcium loss – Why does a low Carbohydrate diet affect bone? Carbohydrates‚ if highly eliminated from the diet‚ are most frequently replaced with protein. The increase in protein very much effects bone health and calcium absorption and excretion. There are conflicting studies as to which way this is influenced. Type II Diabetes – Many treatments for type II diabetes suggest a high carbohydrate
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1. A Little About Buoyancy o In order to understand how a boat can float in water we must first go over one of the principles behind such a feat: buoyancy. This principle in physics was discovered by the mathematician Archimedes about 2‚000 years ago‚ so it has been taught and understood for some time now. The basics of buoyancy involve the relationship between the weight of the object in question‚ in this case a boat‚ and the weight of the water it displaces. If the object weighs more than the
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