PHYSIOEX 9‚ ACTIVITY #3 Review Questions ACTIVITY #1 1. Explain why increasing extracellular K+ reduces the net diffusion of K+ out the neuron through the K+ leak channels? 2. Explain why increasing extracellular K+ causes the membrane potential to change to a less negative value. How well did the results compare with your predictions? 3. Explain why a change in extracellular Na+ did not significantly alter the membrane potential in the resting neuron? 4. Discuss the relative permeability
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EXERCISE 9 - Mechanical properties of solid and fluid mechanics 1. A stainless-steel wire of length 3.1 cm and a diameter of 0.22 mm. If it is stretched by 0.10 mm‚ find the tension of the wire. The Young’s modulus for stainless steel is 18 × 1010 Pa. 22 N 2. Determine the elongation of the rod i Figure 1 if it is under a tension of 5.8 × 103 N. Young’s Modulus: Copper‚ 11.0 x 1010 Nm-2‚ Aluminium 7.0 x 1010 Nm-2 1.9 cm 3. Air is trapped above liquid ethyl alcohol in
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Baldeo Persaud NT1310 Unit 7 Exercise 1: Fiber Optics- Definitions 1. Crosstalk – The coupling or transfer of unwanted signals from one pair within a cable to another pair. Crosstalk can be measured at the same (near) end or far end with respect to the signal source. Crosstalk is considered noise or interference and is expressed in decibels. 2. Waveguides – A structure that guides electromagnetic waves along their length. The core fiber in an optical-fiber cable is an optical waveguide. 3. FTTH
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I have only listed the questions that required answers that are a part of this exercise. A C T I V I T Y 1 Identifying the Latent Period How long is the latent period? _____2.78____ msec Note: If you wish to print your graph‚ click Tools on the menu bar and then click Print Graph. 5. Increase or decrease the stimulus voltage and repeat the experiment. (Remember that you can clear the tracings on the screen at any time by clicking Clear Tracings.) Record your data here: Stimulus Latent voltage:
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right of the Hyperventilation button. 5. Watch the oscilloscope display and the PCO2 window‚ and click Stop before the tracing reaches the end of the screen. What happens to PCO2 during rapid breathing? Explain your answer. 6. Click Record Data. 7. Now click Clear Tracings to prepare for the next run. Rebreathing When Rebreathing is clicked‚ a small bag will appear over the end of the air tube to allow the air within the lungs to be repeatedly inspired and expired. 1. Click Start‚ wait 2 seconds
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EXERCISE 7 - Rotational Kinematics and circular motion 1. A wheel has a radius of 4.1 m. How far (path length) does a point on the circumference travel if the wheel is rotated through angles of 30°‚ 30 rad‚ and 30 rev‚ respectively? 2.1m‚ 1.2x102 m‚ 7.7. x102m 2. A centrifuge in a medical laboratory rotates at an angular speed of 3 600 rev/min. When switched off‚ it rotates through 50.0 revolutions before coming to rest. Find
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CARBON 6 9 ( 2 0 1 4 ) 6 3 8 –6 4 0 Available at www.sciencedirect.com ScienceDirect journal homepage: www.elsevier.com/locate/carbon Letter to the Editor Carbon nanodots with strong nonlinear optical response Dezhi Tan a‚ Yuya Yamada b‚ Shifeng Zhou c‚ Yasuhiko Shimotsuma b‚ Kiyotaka Miura b‚ Jianrong Qiu a‚c‚* a State Key Laboratory of Silicon Materials‚ Department of Materials Science and Engineering‚ Zhejiang University‚ Hangzhou‚ Zhejiang 310027‚ PR China b Department of Material Chemistry
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EXERCISE 7 Respiratory System Mechanics O B J E C T I V E S 1. To explain how the respiratory and circulatory systems work together to enable gas exchange among the lungs‚ blood‚ and body tissues 2. To define respiration‚ ventilation‚ alveoli‚ diaphragm‚ inspiration‚ expiration‚ and partial pressure 3. To explain the differences between tidal volume‚ inspiratory reserve volume‚ expiratory reserve volume‚ vital capacity‚ residual volume‚ total lung capacity‚ forced vital capacity‚ forced expiratory
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Exercise 4: Endocrine System Physiology: Activity 1: Metabolism and Thyroid Hormone Lab Report Pre-lab Quiz Results You scored 100% by answering 6 out of 6 questions correctly. 1. Which of the following statements about metabolism is false? You correctly answered: d. All of the energy from metabolism is ultimately stored in the chemical bonds of ATP. 2. Thyroxine is You correctly answered: c. the most important hormone for maintaining the metabolic rate and body temperature. 3. Thyroid-stimulating
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In lesson 9‚ exercise 9.3 we had to choose between five examples and edit one of them for both unnecessary metadiscourse and redundancy. This exercise was designed to help us understand how to eliminate metadiscourse from our writings. we will examine these two examples 1a which is the incorrect version and 1b which is the correct revised version. 1a. It is my belief that in regard to terrestrial-type snakes‚ an assumption can be made that there are probably none in unmapped areas of the world surpassing
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