AP Biology Lab 1 Ross Lordo Introduction Questions 1. The solute potential would be -2.48. If the concentration inside the cell is .15 M‚ then would diffusion out of the cell and into the solution of .1 M. This is due to water potential and the tendency for water to move from areas of high water potential to low water potential. 2. The turgor pressure must be equal to the water potential if there is no net diffusion. The cell and environment have reached equilibrium and the movement of water
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wave-like motion of the bridge. Energetic vibrations can be explained by using the example of a mass on a spring where potential and kinetic energy are involved. This system can be put into motion by “hitting the mass to put in kinetic energy or by pulling it to one side to put in potential energy” (Crowell) and will continue in this motion‚ trading the energy from potential to kinetic and back again‚ assuming there is no friction in the system. Knowing that the total energy is constant and that
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IB Physics Internal Assessment Andy Tang Research Question In this internal assessment‚ I am given a cantilever to find the physical properties of it. I decide to investigate the relationship between the force I act on one side of the cantilever and the maximum acceleration the tail can reach. This experiment will be also showing the elasticity of the cantilever. Since I pull down one side of it and fixed the other side‚ when I cut the string‚ it will bounce up and down until all the internal
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catapult‚ and get the rubber band ready for launch. The rubber band contains elastic potential energy. That elastic potential energy converts to kinetic energy‚ and the marshmallow launched gains gravitational potential energy while losing kinetic energy‚ until it reaches its maximum height. At its maximum height it has the least amount of kinetic energy‚ but the greatest potential energy. As it falls in loses potential
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Roller Coasters The main energy transfers that happens as a “car” travels along the track from the start of the ride to the end. 1. The main energy transfers are between gravitational potential energy (GPE) and kinetic energy (KE)‚ and the eventual decrease of mechanical energy as it transforms into thermal energy. Roller coasters often start as a chain and motor exercises a force on the car to lift it up to the top of a very tall hill. At this height‚ GPE is at its highest‚ as we can see
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force. W = F x s. SI unit of work is joule. Energy is the capacity to do work. The two types of mechanical energy are kinetic energy and potential energy. Kinetic energy is the energy possessed by an object by virtue of its motion. Potential energy is the energy possessed by an object by virtue of its position or condition. Kinetic energy = 1/2 mv2. Potential energy = mgh. Law of conservation of energy states that energy can neither be created nor destroyed but can be transformed from one form
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The Tired Swimmer Case Study Go to this Website: http://www.sciencecases.org/tired_swimmer/tired_swimmer.asp Answer the Following Questions for Parts IIV. Part I: 1. What vital signs or symptoms does Annie exhibit? Blurred vision and eye strain‚ hands ache and feel weak‚ gasping for air‚ weakness & Constant fatigue 2. Can you see any common features in Annie’s signs and symptoms? Blurred vision and eyestrain we must look at the optic nerve within the brain. Whenever you don’t see
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Tutorial – Work‚ Energy (Assume the acceleration due to gravity‚ g = 9.81 m/s2 ) 1. Calculate the work done when a force of 40 N pushes an object a distance of 500 m in the same direction as the force. 2. Calculate the work done when a mass is lifted vertically by a crane to a height of 5 m‚ the force required to lift the mass being 98 N. 3. A spring‚ initially in a relaxed state‚ is extended by 100 mm. Determine the work done by using a work diagram if the spring requires
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Neuronal signaling in muscle contraction is triggered when an action potential reaches the neuromuscular junction. At this junction‚ acetylcholine (ACh) is the main neurotransmitter. Packaged in vesicles‚ ACh fuses with the neuron’s membrane and is released into the synaptic cleft. ACh diffuses toward the motor end plate and bind to the neurotransmitter receptor on it. The muscle fiber is then triggered to produce an action potential of its own that spreads through the muscle’s T-tubules. The sarcoplasmic
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Student Exploration Energy Conversion in a System Vocabulary energy‚ gravitational potential energy‚ heat energy‚ kinetic energy‚ law of conservation of energy‚ specific heat capacity Prior Knowledge Questions (Do these BEFORE using the Gizmo.) A battery contains stored energy in the form of chemical energy. What are some examples of devices that are powered by batteries ___________________ _________________________________________________________________________ What different forms of energy
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