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What could be the approximate expected distribution of light?
Classic example of natural selection is the change in relative populations of the peppered moth that occurred during the industrial revolution in England. After the industrial revolution in 1870s, booming industrial cities started releasing tons of black soot, blackening tree trunks and rocks and creating an environment where moths with light colours were easily predated by birds. Peppered moths captured in 1850 and 1900 reveal that two industrial cities (X and Y) had the following percent distributions. Year 1850 and 1900.
Moths Light coloured Dark coloured Light coloured Dark coloured X 66 34 22 78 Y 65 35 27 73
Pollution control rules were introduced in 1902 and were properly followed in city Y, but not in city X. If all other factors remain constant, then what could be the approximate expected distribution of light and dark coloured moths in 1950?
We know that a spherical charged particle of will have an external electric field of E = k q/r2, where k = 8.988×109N·m2·C-2 is the Coulomb constant, q is the charge, and r is the distance from the center of the spherical particle.
A radar antenna is tracking a satellite orbiting the earth. At a certain time,the radar screen shows the satellite to be 162 km away.The radar antenna is pointing upward at the angle of 62.3 degrees from the ground.find the x and y components(in k..
A key falls from a bridge that is 52 mabove the water. It falls directly into a model boat, moving withconstant velocity, What is the speed of the boat
suppose that visible light enters a Plexiglas cube containing water at a 20o angle of incidence, travels through the water and exits the cube.
Assume that the masses of the chains, pulleys, and ropes are negligible. Determine the tension in the rope when the crate is being lifted with constant speed.
A block is attached to a pulley and is resting on a ramp. The angle the ramp makes with the horizontal is 35 degrees. What is the mass of the block on the ramp
A drop of water on a countertop reflects light from a flowerheld 3.1 cm directly above it. The flower's diameter is 1.7 cm, andthe diameter of the flower's image is 0.11 cm. What is the focallength of the water drop, assuming that it may be treated a..
A 0.140- baseball traveling 33.0 strikes the catcher's mitt, which, in bringing the ball to rest, recoils backward 15.0 . What was the average force applied by the ball on the glove
The third-order fringe of 610nm light is observed at an angleof 18 degrees when the light falls on two narrow slits. How far apart are the slits
A delivery truck from the postal service is traveling with a constant velocity up and interstate entrance ramp with a 8.5 degree slope.a 60-kg box sits on the floor of the truck and as a result of static friction, it does not slide. What is the work ..
Suppose that a police car on the highway is moving to the right at 30 m/s, while a speeder is coming up from almost directly behind at a speed of 31 m/s, both speeds being with respect to the ground. The police officer aims a radar gun at the speeder..
A beam of protons, each with kinetic energy 40 MeV, approaches a step potential of 30 MeV. What fraction of the beam is reflected and what fraction transmitted
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