In what direction is the net force and what is its value?
(hint: there are only 2 forces involved, think about the direction the
object is "pushed")
down, 75 newtons
right, 70 newtons
right, 100 newtons
left, 70 newtons

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

maybe because its impossible for balloons to lift a whole entire house.

the answer is c a tornado