While countries in the west move towards enlightenment‚ Pakistan is moving towards darkness. The country suffering at the hands of corrupt politicians and terrorism has much graver problems and one of them is load shedding. It is the 21st century and there is no electricity in Pakistan! People are crying their hearts out in front of the government to provide them with the basic necessity of electricity but the government seems to have no clue about how to solve this problem. Energy shortage is
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load shedding The elections of 2008 and 2013 have been lost by incumbents because of load-shedding. The next government has been chosen by the electorate for its reputation for completing projects it fancies‚ come what may. Naturally‚ it expects the same to see the end of load-shedding. So deep is the penetration of the power related anger in the public at large that even a hint of the continuation of the inaction of the past may bring the government down sooner than later. Pakistan may be among
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(b) State the relationship between the buoyant force on an object and weight of the liquid displaced by it. 5. State any two reasons for plant cells to have large central vacuole. [2] 6. List any four salient features of meristematic tissue. [2] 7. What is a super saturated solution? [2] 8.Give reason for the following:(a) A wet handkerchief is placed on the forehead of a person suffering from high fever. (b) We often sprinkle water on the road in summer. [3] 9. (a) Write four differences
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This calcium is then used to initiate contraction‚ given the affinity of troponin to calcium. As troponin attaches to calcium‚ it produces a movement of the tropomyosin molecule that frees up the actin site so that the charged cross-bridge can contact the site resulting in the liberation of energy
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During a Muscle Contraction The muscle fiber is in a resting state. The resting state is slightly negative inside and slightly positive outside. It has to be in this state in order to receive a message. First the brain sends a message to the muscle using a neuron then reaches the axon terminal of the neuron. Calcium gates then open on the axon terminal allowing calcium to rush in. Ach release from axon terminals‚ diffuses across the synaptic clef and binds to (receptors) on motor end plate. Then
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A graph showing the experimental results. Figure 7: shows the relationship between loft angle and linear velocity From the Figure 7‚ there is a negative relationship between the loft angle of golf club and the linear velocity of golf ball. Which means as the loft angle increases‚ the linear velocity of ball decreases. The golf ball travels with relatively fast velocity at 9.2ms-1‚ when the loft angle is 0 degree‚ but it travels relatively slower at 3.7ms-1 when the loft angle is 80 degree. Also
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ACTIVITY 5 Exploring Various Breathing Patterns You will establish the baseline respiratory values in the first part of this experiment. 1. If the grid in the data control unit is not empty‚ click Clear Table to discard all previous data. 2. Adjust the radius of the airways to 5.00 mm by clicking the appropriate button next to the Radius window. Now‚ read through steps 3–5 before attempting to execute them. 3. Click Start‚ and notice that it changes to Stop to allow you to stop the respiration. Watch
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down (contraction: shortens/ dilates) 2. Circular layer: runs around (contraction: constricts/lengthens) xi. Alternates contracting and releasing xii. Peristalsis mixing and moving 1. Controlled by Autonomic Nervous System a. Involuntary ii. iii. b. Controlled by autonomic neuron 2. Vericosities: swollen area; similar to axon terminal does not dead end a. Has synaptic vesicles which could contain ACH or Norepinephrine b. Neurotransmitter can be excitatory (cause contraction) or
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5 + 550 × 5 = 145.8 N ≈ 146 N 12 146 N 241 N 501 N 315 N 185 N Q4. At what height above earth’s surface would the gravitational acceleration be 0.980 m/s2? Answer: 2 GM g GM / R E = = ⇒h = (R E + h ) 2 10 10 10R E − R E = 1.38 × 107 7 = 1.37737 10 m A) B) C) D) E) 1.38 × 107 m 1.12 × 107 m 7.12 × 107 m 5.82 × 108 m 4.05 × 108 m Phys101 Term: 111 Final Tuesday‚ January 10‚ 2012 Code: 1 Page: 3 Q5. In Figure 4‚ what is the net gravitational force exerted on the 5.00 kg
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In this lab‚ we are measuring the EMG amp (mV)‚ or electrical activity‚ from action potentials produced from muscle contractions in order to gain an indication of the number of active motor units used in the contraction. This is done by adding more load to the muscle or force. There is examining of the EMG amp produced from a twitch at varying levels of muscle force and EMG amp from muscles when more load is placed on them. During the experiment‚ we set up the equipment‚ electrodes and software
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