Three non-zero forces, f1, f2 , and f3, are acting on an object. forces f1 and f3 have opposite direction, and both are perpendicular to f2. under which conditions, if any, will the object be in equilibrium?

a. the magnitudes of f1 and f3 must be equal, and must be one half the magnitude of f2.

b. the magnitudes of f1 and f3 must be equal, and must be one third the magnitude of f2.

c. the magnitudes of f1, f2, and f3 must be equal.

d. no equilibrium

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.

More solar radiation is absorbed by earth’s surface than by

Arocket starts from rest and moves upward from the surface of the earth. for the first 10.0 s of its motion, the vertical acceleration of the rocket is given by ay = 12.80 m/s32t, where the +y-direction is upward. (a) what is the height of the rocket above the surface of the earth at t = 10.0 s? b) what is the speed of the rocket when it is 325 m above the surface of the earth?