True it only changes form. Like when water evaporates goes from liquid to a gas and is not destroyed.
Answer:
Explanation:
The lowest trophic level in an ecosystem is occupied by producers or autotrophs also known as plants.
The force exerted by the person is 600 N because to find the original force you would add back 100 from friction
The answer would be A, as B refers to conduction and C and D refer to radiation. Convection is the transfer of different temperature currents, i.e, A
Answer:
(a) The magnitude of the bird watcher's displacement is: 1.739 Km and (b) Average Velocity is: 0.863 Km/h.
Explanation:
To know the magnited of the bird watcher's displacement, we need to use cartesian coordinates. The distance that the bird watcher walked is the vector addition of all movement from the start point. So East = 1.4 - 3.26*Cos(78.6) = 0.756 Km and North = -1.63 + 3.26*Sen (78.6) = 1.566 Km when we have got result of both components axles, we use the pythagorean theorem to get the displacement that the bird watcher walked; R^{2}=x^{2}+y^{2} =\sqrt{0.756^{2}+(1.566)^{2}}=1.739(Km). Then we are going to calculate average velocity as: where delta_x is the displacement traveled by the bird watcher and delta_t is the total time using during the movement, so .