Work‚energy and power-Test 1 MATHMANIA September 24‚ 2013 Instructions - All questions carry 1 mark each TOTAL - 20 marks 1. A rod of mass m and length l is lying on a horizontal table. Find the work required to make it stand on one end. 2. A body is moved along a straight line by a machine delivering constant power. The distance moved by the body in time t is proportional to what power of time? 3. When kinetic energy of a body is increased by 300%‚ its momentum increases by what %? 4.
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This paper is about how the plant cells and solar cells are similar to each other as well as how they are different to one another. In addition this paper explains how the laws of thermodynamics apply to each of the plant and solar cells system. Plant Cells and Solar Cells Photosynthesis is the process of producing and releasing oxygen in the air. It needs sunlight‚ carbon dioxide and
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conservation of the total energy of the system to do this problem: Initially‚ you have‚ in the total of your system‚ a bullet that is moving at a certain speed and a block that is stationary: Initial total energy = Potential Energy + Kinetic Energy + Elastic Energy There is no potential energy nor is there a spring in the system so no elastic energy. Initial total energy = Kinetic Energy. Since the only thing that is moving in the system is the bullet‚ then you calculate the kinetic energy
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thousands of neurons releasing neurotransmitters at its surface‚ how is neuronal activity (to fire or not to fire) determined? Once a stimuli has reached a certain threshold the neuron will fire‚ this is achieved through either graded potential signals or action potential signals. 5. Since all AP’s generated by a given nerve fiber have the same magnitude‚ how does the CNS know whether a stimulus is strong or weak? The CNS determines
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Table Contents 1.0 Executive Summary 2.0 Introduction 2.1 Details of Bungee jumping 2.2 Building Choice 2.3 Cord choice 2.4 Safety Risks & Precautions 3.0 Data 4.0 Explain of the Jump 5.0 Conclusion 6.0 Appendix 2.0 Overview Bungee jumping is an exhilarating activity that rapidly turned into an extreme sport for adrenaline junkies and thrill seekers. The sport involves jumping from a tall structure‚ being a building‚ bridge or crane‚ while secured to
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8 Science Teacher’s Guide This instructional material was collaboratively developed and reviewed by educators from public and private schools‚ colleges‚ and/or universities. We encourage teachers and other education stakeholders to email their feedback‚ comments‚ and recommendations to the Department of Education at action@deped.gov.ph. We value your feedback and recommendations. Department of Education Republic of the Philippines i Science – Grade 8 Teacher’s Guide First Edition‚ 2013 ISBN:
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NTA & PEP Case Analysis The nuclear tube assembly room is a production unit of the American Radiatronics Corporation‚ one of the leading producers and an early pioneer in the nuclear electronics industry. This case deals with the approach of a manager Ralph Langley which lead to a massive improvement in the productivity of the department and about the methods are being considered to be put into action to improve the department even more and how these changes will affect the organization and employee’s
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analogous to a piece of elastic holding two balls together. Of course‚ the bond does not really consist of a material substance‚ but like a piece of elastic‚ it represents a certain amount of potential energy. To carry the analogy further‚ when either a piece of stretched elastic or a chemical bond id broken‚ potential energy is converted to kinetic energy. A chemical bond if apparently an energy relationship between atoms. As I stated in the beginning of this essay‚ Atoms are
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Neurophysiology of Nerve Impulses A C T I V I T Y 1 The Resting Membrane Potential 1. Explain why increasing extracellular K_ reduces the net diffusion of K_ out of the neuron through the K_ leak channels. Increasing the extracellular potassium reduces the concentration gradient‚ and less potassium diffuses out of the neuron and into the cell. 2. Explain why increasing extracellular K_ causes the membrane potential to change to a less negative value. How well did the results compare with
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neuron via the 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 prediction? Your answer: By increasing the extracellular K+ the membrane potential will change to be a less negative value. By adding more extracellular K+ the intracellular K+ will decrease and cause the membrane potential to become less negative. This result in a increased postitve membrane was what we predicted during
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