LABORATORY REPORT Activity 3: Recruitment and Contractions Name: Instructor: Ruth Peterson Date: 07/17/2014 PREDICTIONS 1. When the arm goes from resting to flexing‚ the amplitude and frequency of sEMG spikes will: increase 2. During flexion‚ the amplitude and frequency of sEMG spikes will _be greater_____ during extension. 3. Recruitment of motor units will be greatest when the load is: 5 pounds MATERIALS AND METHODS Comparison of motor unit activation during muscle
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1. Alice throws the ball to the +X direction with an initial velocity 10m/s. Time elapsed during the motion is 5s‚ calculate the height that object is thrown and Vy component of the velocity after it hits the ground. 2. John kicks the ball and ball does projectile motion with an angle of 53º to horizontal. Its initial velocity is 10 m/s‚ find the maximum height it can reach‚ horizontal displacement and total time required for this motion. (sin53º=0‚ 8 and cos53º=0‚ 6) 3. The boy drops
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Blue Ocean Strategy: FROM THEORY TO PRACTICE W. Chan Kim Renée Mauborgne F or twenty-five years‚ competition has been at the heart of corporate strategy. Today‚ one can hardly speak of strategy without involving the language of competition: competitive strategy‚ competitive benchmarking‚ building competitive advantages‚ and beating the competition. Such focus on the competition traces back to corporate strategy’s roots in military strategy. The very language of corporate strategy is
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Year 11 Physic Controlled Assessment The factors that affect the motion of a falling object 1. Gravity 2. Mass 3. Weight 4. Aerodynamic/Streamline 5. Surface Area 6. Shape 7. Elevation Not Having Air Resistance Not having air resistance as a factor in the practical has a big impact on the outcomes that you get‚ as there is nothing acting against gravity hence a greater acceleration the object has. Having Air Resistance However having air resistance also changes the outcome
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Muscle Contraction Helpful links: Diagrams: http://themedicalbiochemistrypage.org/muscle.php http://classes.midlandstech.edu/carterp/Courses/bio210/chap09/lecture1.html Good explanations: http://science.howstuffworks.com/life/human-biology/muscle2.htm Quiz: http://www2.muw.edu/~jfortman/220practst2.html Flashcards: http://quizlet.com/17858377/physiology-ch-8-muscles-flash-cards/ http://quizlet.com/16553525/quiz-4-flash-cards/ http://quizlet
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Load Shedding Power generators have limited capacities. When demand of electricity in a certain area exceeds its generation‚ the supply is to be cut temporarily as a method of reducing the demand on the generators. This temporary reduction in electricity supply is known as load shedding and less formally power cut. Peak load shedding hours are early evenings and mornings when most bulbs are lit and most home appliances are in use. Power is a very important daily need of modern life
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Srivastava’s Srivastava’s MOTION IN ONE DIMENSION 1. A particle is projected vertically upwards with a velocity 20 m s1 from the top of the tower of height 100 m. Determine the time it takes to reach the ground. Answer: t 2 1 6 sec. A particle is dropped from the top of the tower of height h. At the same instant another particle is projected vertically upwards from the bottom of the tower with such a velocity that it will be able to just reach the top of the tower. When and at what height from ground
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(objects) and systems (groups of objects) without consideration of the forces that cause the motion. There are four activities done in this experiment. Graphical analysis of human motion‚ where displacement vs time and velocity vs. time were graphed. Graphical analysis of motion where in the 10th seconds the total displacement is 18.75m‚ average velocity is 1.88m/s and instantaneous velocity is 3.76m/s. Reaction time where one of the normal reaction time among the group is 0.16s and the reaction time
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GENERATOR SET KW & KVAR LOAD SHARING IN A PARALLELED SYSTEM LOAD SHARING Load sharing is defined as the proportional division of the kW and kVAR total load between multiple generator sets in a paralleled system. Load sharing is essential to avoid overloading and stability problems on the systems’ generator sets. ACTIVE POWER (KW) LOAD SHARING When generator sets operate in parallel‚ the engine speed governor of each generator set determines the proportional sharing of the total active power
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Exercise 8 Simple Muscle Contraction • 3 Phases AB - lag phase or latent phase - (shortest) 0.00sec‚ usually less than 0.01sec - brief period that exists between the application of the stimulus and the start of contraction BC - contraction‚ 0.05sec - peak - shortening of the muscle occur CD - relaxation period‚ 0.05 sec - Occurs when Ca+ is transported back in the sarcoplasmic reticulum Single muscle contraction= 100vib/sec (tuning fork)= 0.10 sec 10vib (result) Neuromuscular junction - formed when
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