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1) Research any one species, and describe its ecological niche. For one factor of the niche, describe what you think might happen to an individual of the species if it is forced to exist just a little outside of its optimum range mention how your think this might affect the species.
2) Name or describe an ecotone you have visited . If you can't remember one very well, go to one before working on this question. Was the ecotone a mixture of the ecosystems on either side, or was it unique compared to those ecosystems? Were there certain organisms found only in the ecotone? Were some organisms only found outside of the ecotone?
A satellites are placed in a circular orbit that is 3.64 × 107 m above the surface of the earth. What is the magnitude of the acceleration due to gravity at this distance
For the circuit shown below, C = 0.113 µF and = 103 V. The switch throw is rotated to contact b after having been at contact for the long time, and 3.47s later the potential difference across the capacitor is equal to 1/2. What is the value of R.
A 110 kg hoop rolls along a horizontal floor so that its center of mass has a speed of 0.0760 m/s
In 0.975 s, a 14.1-kg block is pulled through a distance of 3.32 m on a frictionless horizontal surface, starting from rest. By how much does the spring stretch
question1a 240 33.0-cm-diameter turntable rotates on frictionless bearings at 55.0. a 25.0 block sits at center of the
The heat of vaporization of ethyl alcohol is about 200cal/g. If 1.30 kg of it were allowed to vaporize in a refrigerator, how various grams of ice would be formed from 0°C water.
A 350kg sailboat has an acceleration of .62m/s^2 at an angle of 64 degrees north of east. Find the magnitude and direction of the net force that acts on the sailboat
An engine absorbs 1.74 kJ from a hot reservoir at 277°C and expels 1.21 kJ to a cold reservoir at 27°C in each cycle. How much work is done by the engine in each cycle
Radiation at temperature Ti fills a thermally insulated cavity of volume V. If the cavity expands isentropically to volume rV, how much work is done by the radiation , as a fraction of its initial energy? How much work would be done if the expansion ..
A 430 gram rock is whirled on the end of a string 45 cm long which will break under a tension of 22 N. What is the highest speed the rock can reach before the string breaks? (Neglect gravity.)
A puck slides across a smooth, level tabletop at height H at a constant speed vo. What is the algebraic relationship between the distances x and H
A 1.90 m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 15.2 m/s. Calculate the induced emf between the ends of the wire
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