of 50 miles per hour and exert up to four times the force of gravity. Potential energy‚ kinetic energy‚ Newton’s laws of motion and the design of the batman rollercoaster functions. When you first start off you go up this big hill‚ you are increasing your potential energy‚ and when you reach the top you’re at maximum potential energy. At that moment when you start to rush down the other side of the hill you turn that potential energy into kinetic energy. Gravity is the force that pushes you down
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Syllabus. Eliciting a Nerve Impulse Activity 1: Electrical Stimulation 1. Do you see any kind of response on the oscilloscope screen? Just a flat line. 2. What was the threshold voltage‚ or the voltage at which you first saw an action potential? 3.0 V 3. How does this tracing compare to the one that was generated at the threshold voltage? Very similar except that it’s peak is a little higher while it drops a little more as well. 4. What reason can you give for the change
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indicating electric potential‚ in volts‚ created by the charge that you introduced. Record the voltage and turn on “Plot”. 3.7 V 4) This line is much like a line on a geologic topo map. Explain the similarity. The similarity I notice is the circular graph with a noticeable center. 5) You are on the side of a hill with a topo map of the region. If you walked so that your trip follows a topo line you would be doing no work on your backpack. Why?. When using gravitational potential‚ you can collapse
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into two different properties: Potential energy and Kinetic energy. The law of Energy states that: Total Energy = Potential Energy + Kinetic Energy Or Em = Ep + Ek Also‚ the equations for Potential energy and Kinetic energy are stated to get the Total Energy. They are respectively: Ep = mgh and Ek = ½ (m)v2 The Conservation of Energy states that energy is always constant. If potential energy increases then kinetic energy
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Mechanical energy can be either kinetic energy (energy of motion) or potential energy (stored energy of position). Introduction: We use a system consisting of two weights hanging at each end of a thin thread lying over a wheel. A photo gate is placed so that the light is interrupted by the spokes of the wheel. The data are recorded electronically and this makes it possible to calculate the kinetic and gravitational potential energy of the weights. Setup: Procedure: The experiment is made
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WHAT IS TORQUE? Torque is a measure of how much a force acting on an object causes that object to rotate. The object rotates about an axis‚ which we will call the pivot point‚ and will label ’O ’. We will call the force ’F ’. The distance from the pivot point to the point where the force acts is called the moment arm‚ and is denoted by ’r ’. Note that this distance‚ ’r ’‚ is also a vector‚ and points from the axis of rotation to the point where the force acts. (Refer to Figure 1 for a pictoral
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Excitation Contraction Coupling Process The sequence of events that converts action potentials in a muscle fiber to a contraction is know as excitation contraction coupling. In order for a skeletal muscle fiber to contract‚ it has to get a signal from the nervous system. The part of the nervous system that it gets a signal from is called a motor neuron. An electoral signal‚ called an action potential travels down the axon and to the axon terminal. At the end of the motor neuron are structures
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scenarios (going up and down the stairs of the second floor and the third floor of the Main Building) wherein weight was also considered and following this‚ the power output of each member was also computed. Using the Logger Pro‚ the kinetic and potential energies of a ball in free fall were graphed and compared. At the end of the experiment‚ it was said that member #2 was the most “powerful” among the group since she had the highest power output both in going up and going down the stairs and in the
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| | | | Question 2 2 out of 2 points | | | |[pic] |The typical value for the resting membrane potential is _________? | | | | | |Answer | | | | | |Selected Answer:
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transmission of action potentials from one neuron to another. A chemical called acetylcholine is the neurotransmitter released from the presynaptic neuron. As the postsynaptic cells on the muscle cell membrane receive the acetylcholine‚ the channels for the cations sodium and potassium are opened. These cations produce a net depolarization of the cell membrane and this electrical signal travels along the muscle fibers. Through the movement of calcium ions‚ the muscle action potential is taken into actual
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