little longer. Somehow, the hot water must be able to lose its heat faster than the cold water. Evaporation- Theoretical calculations have shown that evaporation can explain the Mpemba effect if you assume that the water loses heat solely through evaporation . When the initially warmer water cools to the initial temperature of the initially cooler water, it may lose significant amounts of water to evaporation. The reduced mass will make it easier for the water to cool and freeze. Then the initially
Words: 530 - Pages: 3
Energy, Work and power of the body All body activities including thinking, doing work, or keeping the body temp. constant involve energy changes, for example under resting(Basal)conditions the skeletal muscles and the heart using 25% of the body's energy ,another 19%is being used by the brain,10%is being used by the kidneys, and 27% is being used by the liver and the spleen. A small percent of about 5% of food energy being excreted in feces and urine. Extra food energy will be stored mainly as fat
Words: 2625 - Pages: 11
Lab Report 1.2 Separating Components of a Mixture I. Objectives: 1. To know the best way of separating mixtures and substances. 2. To know the some ways of separating mixtures and substances. II. Materials: STATION 1 * White sand * Clean bottle * Rice grains * Spoons * Rags * Strainers STATION 2 * A glass of water * Table esalt * Alcohol lamp * Matches * Clean bottles * Stirring rods * Small beakers * Biscuit can
Words: 754 - Pages: 4
Nneze Akwiwu, Ruth Wangia & Bongeka Zuma General Physics 112 Dr. Derrick Hylton 02-16-2015 Desert Irrigation Problem Introduction As physics students in the second part of an introductory physics class, we have been tasked with considering the problem of famine that currently faces some parts of Africa. We have been tasked with answering the question of whether growing crops on desert land could alleviate the problem of famine if the desert was irrigated. We seek to explore
Words: 3411 - Pages: 14
Divergent Boundaries * Divergent means to split apart. * This creates ocean floors 1) What are the major topography divisions in the north Atlantic * Continental margins, deep ocean basins, and mid-oceanic ridge. * CM: outer margins of all continents and transition to oceanic crust * DOB: b/t the CM and ocean ridge * OR: broad linear swell @ a divergent plate boundary. * Slow spreading center has a rougher terrain than a fast spreading center
Words: 834 - Pages: 4
One of the errors included the duration of time in which the hydrate was placed on top of the bunsen burner flame. The alterations in the duration of time between the two trials would lead to a difference in the amount of H2O that was capable of evaporation from the hydrate. As a result, it would affect the mass of the dehydrate recorded after the heating; therefore, the mass of the H2O would be inaccurate (as the mass of the dehydrate is subtracted from the mass of the hydrate to calculate the mass
Words: 568 - Pages: 3
CHAPTER-1 INTRODUCTION Microelectromechanical systems (MEMS) are small integrated devices or systems that combine electrical and mechanical components. They range in size from the sub micrometer level to the millimeter level and there can be any number, from a few to millions, in a particular system. MEMS extend the fabrication techniques developed for the integrated circuit industry to add mechanical elements such as beams, gears, diaphragms, and springs to devices. Examples of MEMS device applications
Words: 6684 - Pages: 27
Emma Wellington Period 8 10/22/12 (No Partner) Lab #3 Separating the Components of a Mixture I. Purpose: The purpose of this lab was to separate the sodium chloride-silicon dioxide mixture using filtration and evaporation II. Equipment and Materials: Refer to the College Preparatory Lab manual, Page 28-30 III. Procedure: Refer to the College Preparatory Lab manual, page 28-30 IV. A. Measurements; Measurements and Data for Separating the Components
Words: 515 - Pages: 3
Written Assignment 1: Intermolecular Forces and Liquids and Solids Answer all assigned questions and problems, and show all work. 1. Explain and give an example for each type of intermolecular force. A: a. Dipole-dipole interaction: a dipole-dipole interaction is the electrostatic attraction between the positive end of one polar molecule and the negative end of the other. Dipole-dipole attraction occurs between molecules which are permanent dipoles (polar covalent molecules). An example
Words: 2850 - Pages: 12
land forms a shallow basin in the center and is surrounded by a slightly higher landform. When the salt marsh is rarely inundated, the water is drawn to the center of the ecosystem due to the abnormal topography of the land. During the process of evaporation, a majority of the water content is removed from the soil and transformed into water vapour, leaving behind highly concentrated salt sediment. Another key abiotic factor is the substrate type. According to the data collected, sites B and D have
Words: 1307 - Pages: 6
