Schools Chemistry Resource Unit Intermolecular Forces Brook R. Kirouac David A. Consiglio‚ Jr. Southfield‐Lathrup High School Southfield Public Schools Bonding: Intermolecular Forces Content Statements: C2.2: Chemical Potential Energy Potential energy is stored whenever work must be done to change the distance between two objects. The attraction between the two objects may be gravitational‚ electrostatic‚ magnetic‚ or strong force. Chemical potential energy is the result of electrostatic
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Exercise 2: Skeletal Muscle Physiology: Activity 2: The Effect of Stimulus Voltage on Skeletal Muscle Contraction Lab Report Pre-lab Quiz 1. Skeletal muscle fibers are innervated (stimulated) by c. motor neurons. 2. A single action potential propagating down a motor axon results in d. a single action potential and a single contractile event in the muscle fibers it innervates. 3. In resting skeletal muscle‚ calcium is stored in c. the sarcoplasmic reticulum. 4. During the latent period
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Exercise 7: Respiratory System Mechanics: Activity 1: Measuring Respiratory Volumes and Calculating Capacities Lab Report Pre-lab Quiz Results You scored 100% by answering 5 out of 5 questions correctly. 1. Which of the following statements describing the mechanics of breathing is false? You correctly answered: d. Ventilation relies exclusively on contracting skeletal muscles. 2. The contraction of which of the following muscles will increase the thoracic cavity volume during inspiration?
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Title : Centripetal force Objective To measure the centripetal force for whirling a mass round a horizontal circle and compare the result with the theoretical value given by F = m(2r . Apparatus 12 slotted weights with hanger (0.02kg each) 1 rubber bung with nylon string about 1.5m 1 glass tube about 20cm long 1 triple beam balance 1 meter rule 1 stop watch Several small paper markers Theory When a mass m attached to a string is whirled round a horizontal circle of radius r‚ the
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"The Force Table" is a simple tool for demonstrating Newton’s First Law and the vector nature of forces. This tool is based on the principle of “equilibrium”. An object is said to be in equilibrium when there is no net force acting on it. An object with no net force acting on it has no acceleration. By using simple weights‚ pulleys and strings placed around a circular table‚ several forces can be applied to an object located in the center of the table in such a way that the forces exactly cancel
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Buoyancy‚ Force‚ and Gravity Purpose: To check the buoyancy of the object measured in Newton. Hypothesis: I think the force pulling down on the clay might be heavier then the container with water and clay. Apparatus: 1 small beaker (mL) 1Graduated cylinder 1 container 1 small portion of clay can Spring scale (newtons) Tap water 1 Cloth Method: First‚ hang the clay on the hook of the Newton spring scale. Secondly‚ record the measurements. Thirdly‚ get a container‚ fill it with
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Learning Objectives • • • • • • • Explore Packet Tracer Real-time mode Explore the Logical Workspace Explore Packet Tracer operation Connect devices Examine a device configuration Review the standard lab setup Overview of the devices Background Throughout the course you will be using a standard lab setup created from actual PCs‚ servers‚ routers‚ and switches to learn networking concepts. This method provides widest range of features and the most realistic experience. Since equipment and time are
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1.7 Factors that affect the activity of an enzyme It is important when working with enzymes to understand basic enzymatic theory behind them when selecting conditions to measure the activity of the enzymes. The factors that are known to affect the concentration of enzymes are temperature‚ pH‚ concentration of enzyme‚ concentration of substrate‚ buffer type and concentration‚ the presence of any inhibitors and cofactors (Worthington-biochem.com). 1.7.1. Temperature With most catalysed reactions‚
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Centrifugal Force Apparatus HFC21 Objective: The object of the experiment is to verify that the centrifugal force varies in direct proportion to 1. The mass of the rotating body M (Experiment parts 1 and 2) 2. The square of the speed of rotation ω (Experiment part 3) 3. The radius of gyration k (Experiment part 4) In accordance with the formula; F = Mω2k Apparatus: Centrifugal Force Apparatus HFC21‚ Cast iron calibrated weights arranged as in Figs.1 and 2. Figure 1 Centrifugal Force Apparatus HFC21
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The Activity of a Protease (Trypsin) Introduction Enzymes catalyze reactions by creating alternate reaction mechanisms whose transition states are more thermodynamically stable than uncatalyzed reactions (Berg et al.‚ 2002; UBC Department of Microbiology and Immunology‚ 2006). Increased thermodynamic stability in these transition states reduces the energy of activation‚ the minimum amount of energy input a chemical system requires for a reaction to occur (UBC Department of Microbiology
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