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3 years ago

Energy in an ecosystem's energy pyramid always flows from __________.

Physics

2 answers:

Anna11 [10]3 years ago

5 0

The Answer is B because primary consumers need to get their food from plants.

Sati [7]3 years ago

5 0

Answer:

The Answer is B because primary consumers need to get their food from plants

Explanation:

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0.0084x91 ...................

Drupady [299]

Answer:

0.0084×91=0.7644

Explanation:

hope this helps

8 0

3 years ago

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Two objects each moving with speed v travel in opposite directions along a straight line passing through both their centers. The

Tpy6a [65]

Answer:

$\dfrac{1}{16}$

$\dfrac{5}{3}$

Explanation:

$m_1$ = Mass of first object

$m_2$ = Mass of second object

v = Speed of both objects

$\dfrac{v}{4}$ = Combined velocity

The ratio of final kinetic energy to initial kinetic energy will be

$\dfrac{K_f}{K_i}=\dfrac{\dfrac{1}{2}(m_1+m_2)(\dfrac{v}{4})^2}{\dfrac{1}{2}(m_1v^2+m_2v^2)} \\\Rightarrow \dfrac{K_f}{K_i}=\dfrac{(m_1+m_2)\dfrac{v^2}{16}}{m_1v^2+m_2v^2}\\\Rightarrow \dfrac{K_f}{K_i}=\dfrac{(m_1+m_2)\dfrac{1}{16}}{m_1+m_2}\\\Rightarrow \dfrac{K_f}{K_i}=\dfrac{1}{16}$

The ratio is $\dfrac{1}{16}$

As the linear momentum is conserved

$m_1v-m_2v=(m_1+m_2)\dfrac{v}{4}\\\Rightarrow m_1-m_2=(m_1+m_2)\dfrac{1}{4}$

Divide by $m_2$ on both sides

$\dfrac{m_1}{m_2}-1=\dfrac{m_1}{4m_2}+\dfrac{1}{4}\\\Rightarrow \dfrac{m_1}{m_2}-\dfrac{m_1}{4m_2}=\dfrac{1}{4}+1\\\Rightarrow \dfrac{3m_1}{4m_2}=\dfrac{5}{4}\\\Rightarrow \dfrac{m_1}{m_2}=\dfrac{5\times 4}{3\times 4}\\\Rightarrow \dfrac{m_1}{m_2}=\dfrac{5}{3}$

The ratio of mass is $\dfrac{5}{3}$

6 0

3 years ago

In a particular television tube, a beam of electrons has a current of 5.8 × 10−5 A . How long does it take for 1.17 × 1015 elec-

Georgia [21]

Here we know that current is defined as rate of flow of charge

so here we have

$i = \frac{dQ}{dt}$

here we also know that

Q = Ne

now we have

$i = \frac{Ne}{t}$

now in order to find time we have

$t = \frac{Ne}{i}$

here we know that

$N = 1.17 \times 10^{15}$

$e = 1.602 \times 10^{-19}C$

$i = 5.8 \times 10^{-5}A$

now we have

$t = \frac{1.17\times 10^{15} (1.602 \times 10^{-19}}{5.8 \times 10^{-5}}$

$t = 3.23 s$

5 0

3 years ago

What is 4 differences between saturated unsaturated and supersaturated solutions

Dennis_Churaev [7]

Answer:

Unsaturated Solution: Less amount of salt in water, clear solution, no precipitation. Saturated Solution: The maximum amount of salt is dissolved in water, Colour of the solution slightly changes, but no precipitation. Supersaturated Solution: More salt is dissolved in water, Cloudy solution, precipitation is visible.

3 0

2 years ago

What does 25 large mean in money ?

Inessa05 [86]

Large in money basically just means dollars. Just means 25 dollars. "He paid me 25 large." Or even 2500 large. It's reffering to an amount of money. It's a colloquial way to express earnings. 25 thousand. If you were to bet it could be like I bet 25 large on this, and he bets 29 large on that.
~Deceptiøn

8 0

3 years ago

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