Can someone please answer this, ill give you brainliest Would be very appreciated.

Physics

1 answer:

RoseWind [281]2 years ago

4 0

Answer:

Option 3

Explanation:

As the roots of the plant hold soil in place, it helps prevent soil erosion.

The other options are true, but they are not correct explanations as to why plants help prevent erosion.

You might be interested in

More or less friction glass

pantera1 [17]

More friction because it's smooth

7 0

3 years ago

During most of its lifetime, s star maintains an equilibrium size in which the inward force of gravity on each atom is balanced

frez [133]

Answer:

$r_f=137493m$

$v=8638940m/s$

Explanation:

During this process the mass $M=2\times10^{30}Kg$ will be considered constant. We start from a radius $r_i=7\times10^8m$ and a period $T_i=30\ days=(30)(24)(60)(60)s=2592000s$ . The final period is $T_f=0.1s$ .

Angular momentum <em>L</em> is conserved in this process. We can use the formula $L=I\omega$ , where I is the momentum of inertia (which for a solid sphere is $I=\frac{2mr^2}{5}$ ) and $\omega=\frac{2\pi }{T}$ is the angular velocity, so we can write the star's angular momentum as: