Answer:
More than 20% of the amazon has been destroyed, affects biodiversity.
Explanation:
- The biggest issues that the amazon is facing is the deforestation and it involves the clearing of land areas for logging, farming, and other land-use changes.
- Effects that are seen are droughts, floods, destruction of habitats of flora and fauna along with the valuable services of the ecosystem.
- This leads to a decrease in the carrying capacity of the species and the decline of the essential resources that are necessary to survive.
Stopped at the end of the tracks by a spg-damper system, as shown in fig. 1
To solve this exercise we need the concept of Kinetic Energy and its respective change: Initial and final kinetic energy.
Let's start considering that the angular velocity is given by,

Where,
V = linear speed
R = the radius
In the case of the initial kinetic energy:

Where I is the moment of inertia previously defined.

In the case of the final kinetic energy, we have to,


For conservation of Energy we have, that
, then (canceling the mass and the radius)





Answer:
the diver's speed just before she enters the water is 8.718 m/s.
Explanation:
Given;
height of the diving platform, h = 3.8 m
initial velocity of the diver, u = 1.24 m/s
the diver's speed just before she enters the water is her final velocity, = v
Apply the following kinematic equation to determine the final velocity of the girl;
v² = u² + 2gh
v² = (1.24)² + 2(9.8 x 3.8)
v² = 76.018
v = √76.018
v = 8.718 m/s
Therefore, the diver's speed just before she enters the water is 8.718 m/s.