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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?
The diffusion rate for a solute is 4.0 × 10-11 kg/s in a solvent-filled channel that has a cross-sectional area of 0.50 cm2, What would be the diffusion rate m/t in a channel with a cross-sectional area of 0.30 cm2
A concave makeup mirror is designed so that aperson 23 cm in front of it seesan upright image magnified by a factor of two. What is the radius of curvature of the mirror in meters?
A 4.7-nF parallel plate capacitor with a sheet of Mylar filling the space between the plates is charged to a potential difference of 157.0 V and is then disconnected. What is the potential difference between the plates of the capacitor once the Myl..
A Ferris wheel is moving at an initial angular velocity of 1.0 rev/39 s. If the operator then brings it to a stop in 3.3 min, what is the angular acceleration of the Ferris wheel
a car traveling in a straight line has a velocity of 8.5 ms. after 6.0 s its velocity is 8.0 ms. what is the cars
Two small charged balls have a repulsive force of 0.18N when they are separated by a distance of 0.85m. How far apart are they now
A particle is uncharged and is thrown vertically upward from ground level with a speed of 25.0 m/s. As a result, it attains amaximum height h. The particle is then given a positive charge +qand reaches the same maximum height h when thrown vertica..
A 45.0 kg girl is standing on a 162 kg plank. The plank, originally at rest, isfree to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.44 m/s relative to the plank.
How do standing wave produce sound
A series AC circuit contains a resistor, an inductor of 230 mH, a capacitor of 4.30 µF, and a source with ?Vmax = 240 V operating at 50.0 Hz. obtain the phase angle between the current and the source voltage
A highway curve has a radius of 0.14 km and is unbanked. A car weighing 12 kN goes around the curve at a speed of24 m/s without slipping. What is the magnitude of the horizontal force of the road on the car?
A lunch tray is being held in one hand, as the figure illustrates. The mass of the tray itself is 0.214 kg, and its center of gravity is located at its geometrical center. Obtain the force exerted by the thumb
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