as the rate at which energy is transformed. Energy can be broken into two different types. Often called stored energy potential energy represents work that has already been done. A book lying on the top shelf of a book case has potential energy and so does a fully stocked soda machine. If the book were to fall off the shelf‚ or a soda shoots into the dispenser‚ the potential energy become kinetic energy. Nothing can move with out energy‚ and the energy of movement is kinetic. The book on the
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truly can only be transformed from one type into another and in this case all the potential energy transformed into an equal quantity of kinetic energy keeping the total amount of energy constant. Data Analysis and Discussion: The above simulations both prove that at any given time during the track‚ the total energy remains constant as proved by the yellow bar & that the kinetic (green bar) and potential energy (blue bar) constantly interchange between each other but always add up to the
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the heart muscles and this is how the heart pumping blood out to the entire body and how the heart contract. The stages of the pathway of action potential: 1) The Action Potential is in the Sinoatrial node (SA). Action potential then travels from the SA node to the AV (atrioventricular node) by crossing to the wall of the atrium. 2) Then the action potentials slowly pass through the AV node and it give time for the atria to contract. 3) Then it’s rapidly passes through the atrioventricular bundle that
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subsequently with the sodium ions in the next node of Ranvier‚ vastly speeding up the process of propagating the action potential5. This process can be modeled by a partial differential equation obtained from the Cable theorem and describes the potential across the myelin layer‚ found in Equation 1
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receptor 2. All of the following are features of graded potentials except… a. decremental d. occur at dendrites b. sub-‐threshold e. can be inhibitory c. non-‐decremental Identify the following features of the action potential for a typical neuron. Be aware of the sequence of events.
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brain III. Nerve Impulse Conduction A. Resting Potential 1. positive charge outside a. high sodium ion concentration 1) sodium pump 2. negative charge inside a. phosphate & sulfate ions b. negatively charged proteins c. high potassium concentration 1) potassium pump 3. potential difference = -70 mV B. Potential changes 1. –70 mV to 0 = depolarization 2. higher than –70 mV = hyperpolarizing C. Action Potential occurs when Threshold Potential achieved 1. causes
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group was student number 2 with power outputs of 239.4 W and 266.0 W when going up and down respectively. On the second activity‚ the graphs of the potential energy vs. time‚ kinetic energy vs. time‚ and mechanical energy vs. time of a ball thrown vertically were all predicted. Finally‚ the ball was tossed on the motion detector and the graphs of potential‚ kinetic‚ and mechanical energies vs. time were all produced using the Logger Pro. Introduction Work is said to be an act of exerting force. Whatever
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0 Activity 1‚ the simulation showed you how the resting membrane potential depends on the concentration of K+ and Na+ in the ECF. Some data were generated while measuring the resting membrane potential using a microelectrode that was positions alternatively in the ECF and the ICF. You recorded the data in Chart 1 on page 35. Use the data to produce a Graph that will clearly show how the effects ion the resting membrane potential when the ECF concentration of K+ is high and when the ECF concentration
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must be a) moving. b) falling. c) high above the ground. d) at rest. Answers: A Question 7: A book is at rest on a tabletop. One student calculates the potential energy as 15 J. Another student calculates the potential energy as 20 J. Which statement is correct? a) One or both of the students must have calculated the potential energy incorrectly. b) Both answers could be correct. c) Both answers are wrong because they use the wrong units. Answers: b Question 8: TRUE or FALSE: An
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each component‚ and 2. find the potential difference across each component. The rules of circuit analysis are called Kirchhoff’s rules. The Loop Rule This rule asserts that the net change in electric potential around any closed loop in a circuit is zero. This is a statement of energy conservation‚ since a charge that moves around any closed DIY First-Year Physics Laboratory Kirchhoff’s Rules path and returns to its original point must have no change in potential energy. If we apply this conservation
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