Physics, 04.12.2019 07:31 YuliaTyson6080
Achanging climate has strong implications for biodiversity. studies of fossil and pollen distribution show that species are very sensitive to climate changes. when the climate changes, species often die out in their present areas and colonize new areas. therefore, as the climate changes in the future, there will be disruption of natural communities and extinction of populations and species.
based on the information above, which of these would most likely be affected by a global warming?
a) rattlesnakes in the desert.
b) polar bears living on the sea ice.
c) earthworms burrowing in the ground.
d) spider monkeys in the tropical rain forests.
Answers: 3
Physics, 22.06.2019 11:00
Which sound characteristic is not affected by the relative motion of an object
Answers: 2
Physics, 22.06.2019 15:30
Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?
Answers: 2
Physics, 22.06.2019 15:30
To understand the behavior of the electric field at the surface of a conductor, and its relationship to surface charge on the conductor. a conductor is placed in an external electrostatic field. the external field is uniform before the conductor is placed within it. the conductor is completely isolated from any source of current or charge. part a: which of the following describes the electric field inside this conductor? it is in the same direction as the original external field.it is in the opposite direction from that of the original external field.it has a direction determined entirely by the charge on its surface.it is always zero. part b: the charge density inside the conductor is: 0non-zero; but uniformnon-zero; non-uniforminfinite part c: assume that at some point just outside the surface of the conductor, the electric field has magnitude e and is directed toward the surface of the conductor. what is the charge density η on the surface of the conductor at that point? express your answer in terms of e and ϵ0
Answers: 1
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