(C) The genetic engineering process yields the same amount of food in less favorable climates. (B) The food produced from genetic engineering processes is safe to eat. What is the role of the FDA in regulating herbal supplements such as ephedra? Which of the following is NOT an argument used in favor of genectically modified food? (A) It is a logical extension of selective breeding. 0.31 The measurement of hydrogen ion concentration goes from _ to _ on a pH scale. If g-9.8 m/s, what is the coefficient of static friction? a. ![]() A horizontal force of 750 N is needed to overcome the force of static friction between a level floor and a 250-kg crate. uses measurements of the proportions of various isotopes in meteorites. uses the current surface temperature of the sun and the rate at which this temperature is decreasing.ĭ. shows that the age of the solar system is nearly 14 billion years.Ĭ. uses the detailed record of impacts on the moon to determine the age of the solar system.ī. What was the current used? The scientific method of determining the age of the solar system a. What impact does homologous recombination have on the principle of independent assortment? One gram of Sn was electroplated from a SnCl, solution in 30 minutes. Release is mostly controlled by the nervous system Define independent assortment within the framework of meiosis. Produced by glands and released through ductsĭ. Which of the following is not a characteristic of a hormone? a. The mass of an electron is equal to 9.11 *10^-31 kg The negative means the particle is slowing down. Where Vf is the final velocity, 0 in this case, Vo is the initial velocity, a is the acceleration and d is the distance that the particle has traveled. We can find the acceleration that the particle experimented using the equation of velocity: Where q is the charge of the particle and E is the magnitude of the field.įorce is also equal to the mass of the particle times its acceleration (Newton's second Law). ![]() 0399868, that is, almost a 4% probability.Ī charged particle that is in a region where there is an electric field will experiment a force equal to: This integral can be computed analytically, and it's numerical value is. Now, if we know the wavefunction, we can know what the probability density function is, it is:Īnd to find the probability of finding the particle in a strip at the centre of the well of width 2% of L we only have to integrate: Here the leading constant is just there to normalise the wavefunction. As we pointed out, the ground state is the sine wave with the largest wavelength possible (that is, with the smallest energy). The solution to this equation are sines and cosines, but the boundary conditions only allow for sine waves. Let be the well's length, the boundary conditions for the wavefunction are: If we solve Schrödinger's equation for the infinite square well, we find that its eigenfunctions are sinusoidal functions, in particular, the ground state is a sinusoidal function for which only half a cycle fits inside the well. ![]() The probability of finding the proton at the central 2% of the well is almost exactly 4%
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