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Montano1993 [528]
3 years ago
6

What do the flows of energy and matter through an ecosystem have in common?

Physics
1 answer:
GREYUIT [131]3 years ago
8 0

Answer:

i believe it's the last one

Explanation:

because the first law of thermodynamics states that energy can be changed from one form to another, but it cannot be created or destroyed.

good luck :)

i hope this helps

have a great day !!

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A tabletop gamer has designed a game that requires three dice to be thrown onto a tray with a measurement grid. To add an extra
Airida [17]

Answer:

The resulting coordinate is   (x,y) =  (-0.170 \ m  ,  -0.038 \ m )

Explanation:

From the question we are told that  

     The  mass of the first dice is  m_1 =  11.10 \ g

      The  mass of the second dice is  m_2  =  15.10 \ g

     The mass of the third dice is  m_3 =  18.90 \ g

     The coordinate of the first dice is (x_1, y_1) =  (0.3150\ m  ,  -0.4990 \ m  )

     The coordinate of the second dice is  (x_2,y_2) =  (-0.4050  \ m  , 0.4850 \ m  )

      The coordinate of the third dice is  (x_3 , y_3) =  (-0.1150 \ m ,  -0.1850\ m )

Generally the resulting coordinate of the center of mass of the dice in the x-axis is mathematically evaluated as

        x\ cm  =  \frac{m_1 * x_1 + m_2 * x_2 + m_3 * x_3}{m_1 + m_2 +m_3 }

i.e the summation of the moments about their x-axis divided by the magnitude of their masses

    substituting values

         x\ cm  =  \frac{11.0  * 0.3150 + 15.10 * (-0.4050) + 18.90 * (-0.1150)}{11.100 + 15.10 +18.90 }

        x\ cm  = -0.170 \ m

Generally the resulting coordinate of the center of mass of the dice in the y-axis is mathematically evaluated as

     y\ cm  =  \frac{m_1 * y_1 + m_2 * y_2 + m_3 * y_3}{m_1 + m_2 +m_3 }

     y\ cm  =  \frac{ 11.10 * (-0.4990) + (15.10) * (0.4850) + (18.90) * (-0.1850)}{ 11.10 + 15.10 +18.90 }

     y\ cm  =  -0.038 \ m

Thus the resulting coordinate is   (x,y) =  (-0.170 \ m  ,  -0.038 \ m )

4 0
3 years ago
Which of these is not shared by bohrs model and the modern atomic model?
KonstantinChe [14]

Answer:

D. both have electrons that orbit the atomic nucleus in a simaler way

Explanation:

the bohrs model electrons orbit in a circular pattern were as the modern atomic model orbit in every which way

3 0
3 years ago
Suppose that a car starts from rest at t = 0. The car moves with an acceleration of 1.5 m/s2. How far will the car travel in 3.0
rodikova [14]

Answer:

6.75m

Explanation:

To calculate the distance in this question, we can use the formula:

S = ut + 1/2at^2

Where; S = distance

u = initial velocity = 0m/s

t = 3s

a = 1.5m/s^2

Hence:

S = (0 × 3) + 1/2 (1.5 × 3 × 3)

S = 0 + 1/2 (13.5)

S = 13.5/2

S = 6.75

Therefore, the car will travel 6.75m in 3seconds.

3 0
4 years ago
wide tube that extends down from the bag of solution, which hangs from a pole so that the fluid level is 90.0 cm above the needl
Bingel [31]

Answer:

The average gauge pressure inside the vein is 110270.58 Pa

Explanation:

This question can be solved using the Bernoulli's Equation. First, in order to determine the outlet pressure of the needle, we need to find the total pressure exerted by the atmosphere and the fluid.

P_f: fluid's\ pressure\\P_f= \rho g h=1025\frac{kg}{m^3} \times 9.8 \frac{m}{s^2} \times 0.9 m=9040.5 Pa \\P_T: total\ pressure\\P_T=P_{atm}+P_f\\P_T=101325 Pa + 9040.5 Pa=110275.5 Pa\\

Then, we have to find the fluid's outlet velocity with the transversal area of the needle, as follows:

S: transversal\ area \\S= \pi r^2=\pi (0.200 \times 10^{-3})^2=5.65 \times 10^{-7} m^2\\v=\frac{F}{S}=\frac{5.55 \times 10^{-8} \frac{m^3}{s}}{5.65 \times 10^{-7} m^2}=0.98\times 10^{-1} \frac{m}{s}

As we have all the information, we can complete the Bernoulli's expression and solve to find the outlet pressure as follows:

P_T-P_{out}=\frac{1}{2} \rho v^2\\P_{out}=P_T-\frac{1}{2} \rho v^2=110275.5 Pa-\frac{1}{2} 1025\frac{kg}{m^3} (0.98\times 10^{-1} \frac{m}{s})^2=110275.5 Pa-4.92 Pa =110270.58 Pa

6 0
3 years ago
A boy pushes a 50 kg wheelbarrow with a velocity of 0.5 m/s. If he uses a force of 10 N, how far does he push
labwork [276]

Answer:

d=1.25 m

Explanation:

fd=.5mv2-.5mv1; 10(d)=.5(50)(.5)-0; 10(d)=12.5; d=12.5/10; d=1.25 m

4 0
3 years ago
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