Physics, 11.11.2019 19:31, webbhlharryteach
We can model a pine tree in the forest as having a compact canopy at the top of a relatively bare trunk. wind blowing on the top of the tree exerts a horizontal force, and thus a torque that can topple the tree if there is no opposing torque. suppose a tree's canopy presents an area of 9.0 m^2 to the wind centered at a height of 7.0 m above the ground. (these are reasonable values for forest trees.)
if the wind blows at 6.5 m/s, what is the magnitude of the drag force of the wind on the canopy? assume a drag coefficient of 0.50 and the density of air of 1.2 kg/m^3
what torque does this force exert on the tree, measured about the point where the trunk meets the ground?
Answers: 2
Physics, 21.06.2019 16:10, brendaesme
Avoltage source vs = 10 v is in series with a resistor of 10 kohm. if the source transformation theorem is applied, what will the value of the current source be in ma ?
Answers: 1
Physics, 22.06.2019 08:40, tasniahussain21
The system is released from rest with the cable taut, and the homogeneous cylinder does not slip on the rough incline. determine the angular acceleration of the cylinder and the minimum coeffi cient s of friction for which the cylinder will not slip.
Answers: 2
We can model a pine tree in the forest as having a compact canopy at the top of a relatively bare tr...
Mathematics, 19.07.2019 15:30