Chapter 9 IMPULSE AND MOMENTUM COLLISION PROBLEMS A tennis ball and racket collision: a microscopic view COLLISION: FORCE VS TIME GRAPH A large force exerted during a small interval of time is called an impulsive force. LINEAR MOMENTUM The product of the particle’s mass and velocity is called the linear momentum p = mv As a vector quantity‚ the momentum can be represented in terms of its components: px= mvx py= mvy ALTERNATIVE FORM OF NEWTON’S SECOND LAW F = ma = m(dv/dt) =
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Site Plan | I. Neurons/nerve cells A neuron is a cell specialized to conduct electrochemical impulses called nerve impulses or action potentials. Neuron is the main cellular component of the nervous system‚ a specialized type of cell that integrates electrochemical activity of the other neurons that are connected to it and that propagates that integrated activity to other neurons. They are the basic information processing structures in the CNS.
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Dynamics Test Review Dynamics: The study of forces that cause motion Types of Forces: can accelerate‚ deform‚ rotate measured in Newtons (N). Force of Gravity: force of attraction between all matter Force of Friction: force that resists relative motion of two surfaes. Always parallel to surface in contact Normal force: force of contact that exists between two surfaces Applied Force: the push or pull Tension Force: the force of a rope or a chain (can only pull) Air resistance: caused by a
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Peer Review Worksheet Part of your responsibility as a student in this course is to provide quality feedback to your peers that will help them to improve their writing skills. This worksheet will assist you in providing that feedback. Please use it for each review that you perform throughout the course. Please copy and paste the completed Review into your reply to the post containing the assigned draft. Please do not post your Review as an attachment. Name of the
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Nerve Physiology Cells in the Nervous System * Two types * Nerve cell or neurons * Glial cells or neuroglia Neurons * Functional unit of nervous system * Have anatomically and physiologically specialized for communication and signaling * Neurocrene * 10 billion neurons in nervous system * Once they degenerate they don’t usually go REGENERATION Neuroglia * Nerve glue * Supportive cells * 10x greater of your neurons * Not involve in impulse
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CHAPTER 8 1) Access Control List: This network access control determines which IP packets are allowed entry to a network and which are dropped. 2) Access Control Matrix: A table specifying which portions of the system users are permitted to access. Compatibility tests utilize a(n) ________‚ which is a list of authorized users‚ programs‚ and data files the users are authorized to access or manipulate. 3) Authentication: Verifying the identity of the person or device attempting to access the
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U.S. History Europe England: Economics – enclosure o Economy began to revive o Enclosure: property owners fence off land for grazing Squatters kicked off Hiof land => landless population o Colonies = solution for landless peoples Merchant capitalism o Merchants in look for investment opportunities Development of joint-‐stock companies Nationalism o Spain = Britain’s greatest rival o Defeat of Spanish
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1. In the plasma membrane‚ the phospholipid heads A) are hydrophobic and face outward towards the aqueous solution on both sides of the membrane B) are hydrophilic and face inward‚ shielded from water C) are hydrophilic and face outward towards the aqueous solution on both sides of the membrane D) are hydrophobic and face inward‚ shielded from water Points Earned: 0.5/0.5 Correct Answer(s): C 2. The function of chloroplasts is A) lipid synthesis. B) intracellular digestion
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Cranial Nerves The brain and spinal cord (CNS) are connected to parts of the body by nerves and cell bodies called the peripheral nervous system. The PNS contains all of the nervous tissue outside the brain and spinal cord. Afferent (sensory) nerve fibers-conduct nerve impulses toward the CNS Efferent (motor) nerve fibers-conduct nerve pulses away Sensory Somatic System – Carries nerve impulses from the senses to the CNS and also carries the impulses to the skeletal muscles and glands
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Topic 1 Part I - Multiple Choice Questions 1 Which two particles have approximately the same mass? (1) proton and neutron (3) neutron and electron (2) proton and electron (4) neutron and positron 2 Which statement is true about a proton and an electron? (1) They have the same masses and the same charges. (2) They have the same masses and different charges. (3) They have different masses and the same charges. (4) They have different masses and different charges. 3 The atomic
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