find the fastest velocity that the probe recorded and record it as your final velocity 8. find the position of the block at the time which the velocity was its fastest and use that as your displacement 9. calculate energy lost by finding the potential energy at the top of the ramp and subtracting the kinetic energy at the end of the ramp * 10. calculate the efficiency of the system * 11. calculate the force of friction between the block and the ramp* 12. calculate the coefficient of kinetic friction between the block and the ramp *
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Week 1 Chapter 1 1. What is the basic difference between anatomy and physiology? (p. 2) ANSWER: Anatomy (a-NAT-ō-mē; ana- = up; -tomy = process of cutting) is the science of structure and the relationships among structures. Physiology (fiz′-ē-OL-ō-jē; physio- = nature‚ -logy = study of) is the science of body functions‚ that is‚ how the body parts work. 2. Define each of the following terms: atom‚ molecule‚ cell‚ tissue‚ organ‚ system‚ and organism. (p. 6) ANSWER: AtomUnit of matter that makes
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concentration in electrolytes on the potential difference in a voltaic cell Introduction When two electrodes made of different metals are connected together in a voltaic cell‚ the chemical energy present is converted into electrical energy and an electromotive force is generated. This force‚ called the electrode potential‚ is normally measured under standard conditions‚ which is 298K‚ 1 mol dm-3 solution for the electrolyte. However when one measures the electrode potential in a voltaic cell‚ the conditions
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The moment of inertia is a measure of an object’s resistance to changes in its rotation. It must be very specific to the chosen axis of rotation. Also‚ it is specific to the mass and shape of the object‚ including the way that is mass is distributed in the object. Moment of inertia is usually quantified in kgm2. An object’s where the mass is concentrated very close to the center of axis of rotation will be easier to spin than an object of identical mass with the mass concentrated far from the axis
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saw an action potential? 3.0 V 3. How does this tracing compare to the one that was generated at the threshold voltage? The tracing travel in the same fashion but the tracing were different with an increase threshold voltage 4. What reason can you give for the change? Increase voltage 5. Record this maximal voltage here: 6.0 V Activity 2: Mechanical Stimulation 1. When the glass rod is touching the nerve‚ what do you see on the oscilloscope screen? The nerve’s action potential to stimuli
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increasing extracellular K+ causes the membrane potential to change to a less negative value. How well did the results compare with your prediction? Your answer: If extracellular K+ is increased then the intracellular K+ will decrease. Fewer intracellular K+ ions would result in the membrane potential being less negative. This is what I predicted to happen. 3. Explain why a change in extracellular Na+ did not significantly alter the membrane potential in the resting neuron? Your answer: There
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Impulses: Activity 1: The Resting Membrane Potential Lab Report Pre-lab Quiz Results You have not completed the Pre-lab Quiz. 08/28/12 page 1 Experiment Results Predict Question: Predict Question: Predict what will happen to the resting membrane potential if the extracellular K+ concentration is increased. Your answer : b. The resting membrane potential will become less negative. Stop & Think Questions: What is the polarity of the resting membrane potential (voltage)? You correctly answered: b
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a prototype of a device and troubleshoot problems as they arise. (212-14) Analyze quantitatively the relationships among mass‚ height‚ gravity‚ spring constant‚ gravitational potential energy and elastic potential energy. (326-1) Solve problems using the law of conservation of energy‚ including changes in elastic potential energy. Introduction Would you plunge off a bridge attached only by a soft springy cord that could stretch three to four times its free length? If you understood the physics
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Japan could be a potential market for Dell. Dell Inc. is a growing company that provides a range of computer products for enterprise markets and consumers. Dell offers a broad range of desktops and notebook PC’s. They also offer printers‚ network servers‚ projectors‚ storage systems‚ Ethernet switches‚ and work stations. The company markets third party software and provides system integration‚ support‚ and training. We believe that Japan would be a potential market for Dell Inc. Japan is the largest
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first understand the how a neuron works. In view of the fact that neurons form a network of electrical activities‚ they somehow have to be interconnected. When a nerve indicator‚ or impulse‚ reaches the ends of its axon‚ it has traveled as an action potential‚ or a pulse of electricity. However‚ there is no cellular continuity between one neuron and the next; there is a breach called synapse. The membranes of the sending and receiving cells are separated from each other by the fluid-filled synaptic gap
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