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3 years ago

A major disturbance that caused the ecosystem to stabilize at a new equilibrium?

Physics

1 answer:

blsea [12.9K]3 years ago

7 0

Answer: If you remove all of the hawks, it stabilizes an a new equilibrium.

Explanation: For the ecosystem to stabilize at a new equilibrium, the tertiary consumer (hawks) need to be totally removed from the ecosystem. Since there's no tertiary consumer to checkmate the density of other components of the food chain, it will make form a balanced ecosystem.

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A solid sphere of radius 30cm is uniformly charged to 100nC. a) What is the volume charge density of the sphere? b) What is the

g100num [7]

Answer

given,

total charge Q = 100 n C

= 100 × 10⁻⁹ C

radius of the solid sphere = 30 cm

= 0.3 m

Volume of sphere = $\dfrac{4}{3}\pi r^3$

= $\dfrac{4}{3}\pi\times 0.3^3$

=0.113 m³

a) volume charge density

$\rho = \dfrac{10^{-7}}{0.133}$

ρ = 8.85 × 10⁻⁷ C/m³

b) at r = 10 cm = 0.1 m

charge in the sphere at radius

$Q = \dfrac{4}{3}\pi\times 0.1^3\time \rho$

= 3.7037 \times 10^{-9}C[/tex]

Field strength

$E_1 = \dfrac{Q}{4\pi \epsilon_0 r^2}$

$E_1 = \dfrac{3.7037 \times 10^{-9}}{4\pi \times 8.85\times 10^{-12}\times 0.1^2}$

= $3.33 \times 10^3 N/C$

at r = 20 cm = 0.2 m

$Q = \dfrac{4}{3}\pi\times r^3\time \rho$

$E_1 = \dfrac{Q}{4\pi \epsilon_0 r^2}$

$E_1 = \dfrac{ \dfrac{4}{3}\pi\times r^3\time \rho}{4\pi \epsilon_0 r^2}$

$E_1 = \dfrac{\rho}{3 \epsilon_0}$

$E_1 = \dfrac{0.2\times 8.842 \times 10^{-7}}{3 \times 8.85\times 10^{-12}}$

= $6.66 \times 10^3 N/C$

at r = 30 cm

$E_1 = \dfrac{\rho}{3 \epsilon_0}$

$E_1 = \dfrac{0.3\times 8.842 \times 10^{-7}}{3 \times 8.85\times 10^{-12}}$

= 9.99 N/C

6 0

4 years ago

Jason launches a model rocket with a mass of 2.0 kg from his spring-powered rocket launcher with a spring constant of 800 N/m. H

Arada [10]

Answer:

121 Joules

6.16717 m

Explanation:

m = Mass of the rocket = 2 kg

k = Spring constant = 800 N/m

x = Compression of spring = 0.55 m

Here, the kinetic energy of the spring and rocket will balance each other

$\frac{1}{2}mu^2=\frac{1}{2}kx^2\\\Rightarrow u=\sqrt{\frac{kx^2}{m}}\\\Rightarrow u=\sqrt{\frac{800\times 0.55^2}{2}}\\\Rightarrow u=11\ m/s$

The initial velocity of the rocket is 11 m/s = u.

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.81 m/s² = g

$v^2-u^2=2as\\\Rightarrow s=\frac{v^2-u^2}{2a}\\\Rightarrow s=\frac{0^2-11^2}{2\times -9.81}\\\Rightarrow s=6.16717\ m$

The maximum height of the rocket will be 6.16717 m

Potential energy is given by

$P=mgh\\\Rightarrow P=2\times 9.81\times \frac{0^2-11^2}{2\times -9.81}\\\Rightarrow P=121\ J$

The potential energy of the rocket at the maximum height will be 121 Joules

5 0

4 years ago

Near the poles, more energy is reflected back into space than is absorbed. near the poles, more energy is reflected back into sp

VladimirAG [237]

Correct answer: a) True.

In fact, the soil at the poles consists mainly of snow. Snow has an albedo of 90%: albedo is the fraction of light (and so, of energy) that is reflected back to the space. This means that at the poles, about 90% of the light is reflected back to the space, while only 10% is absorbed.

7 0

3 years ago

Which subatomic particle is electricity neutral and found in nucleus of an atom?

qaws [65]

I believe its "Neutrons" because it is said to be neutral and it's a subatomic particle which is present in the nucleus of an atom.

6 0

3 years ago

An atom that has only one electron in its valence electron shell is_______chemically reactive.

Rasek [7]

Highly

Explanation:

An atom that has one electron in its valence electron shell is highly chemically reactive.

Such atoms are called Alkali metals. They occupy the first group on the periodic table and they are a bunch of metals.

The number of electrons in the valence shell of atoms determines the reactivity of an element.
Atoms are gained or lost or shared in order to attain an octet configuration.
When an atom with one electron in the valence shell loses this electron, it will become stable.
This implies that it will attain its octet.
This makes them take part in reactions that will ensure they lose that electron.
Examples of such atoms Li, Na, K, Rb, Cs and Fr.

learn more:

Reactivity of Na brainly.com/question/6496202

#learnwithBrainly

4 0

3 years ago