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Egg incubation is an important determinant of the sex of many reptiles. In a study of loggerhead turtles 100% of the hatchings from eggs incubated at 26°C were male, while 100% of those from eggs incubated at 32°C were female. A study was undertaken of a loggerhead turtle nest on a tropical beach consisting of black volcanic sand. An infrared radiometer was used to monitor upward long wave radiation at the surface of the sand (assume the sand is a perfect blackbody (emitter) covering the eggs. The average Hlux density recorded for the period the eggs were incubating was 617 W/m2. The soil heat Hlux of the sand was found to be 14.4 W/m and the thermal conductivity 0.4 W/(m°C). The turtle eggs were 50 cm below the sand surface. Assuming that the insulating effect of the sand kept the nest at a constant temperature, would you expect the hatchlings to be male or female?
A horizontal 792-N merry-go-round is a solid disk of radius 1.43 m, Find the kinetic energy of the disk after 2.92 s
q1. what is an acceleration of two falling sky divers mass 120.0 kg including parachute while the upward force of air
a uniform sphere of mass 2kg is kept in a fixed position by two strings ab and cd. ab is horizontal and cd is inclined
A large capacitance of 1.27 mF is needed for a certain application. Calculate the volume of Teflon alone in the capacitor
A 0.20-kg object is attached to the end of an ideal horizontal spring that has a spring constant of 120 N/m. compute the amplitude A of the motion
A small block with mass m=3 kg is on the right of the large block and is initially a distance d=1.4 m above the ground. how long does it take to hit the ground
A circuit employs a silicon solar cell to detect flashes of light lasting 0.25 s. what is the minimum power of a flash of light of wavelength
Discuss the cause and different mechanisms available. Recognize and discuss the flow control techniques on which they are based? Determine the pros and cons of each?
A 2.50 hp water pump is pumping water from a well 12.0 m below ground. How many liters of water can it lift to the ground in 1 hour
A dockworker applies a constant horizontal force of 70.0N to a block of ice on a smooth horizontal floor. how far does the block move in the next 4.50s
Identify how the carbon sequestration strategy seeks to fix, or at a minimum, define what is meant by the term carbon sequestration
q1. a 3.3 block of wood sits on a table. a 3.0 bullet fired horizontally at a speed of 480 goes completely through the
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