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katen-ka-za [31]
3 years ago
7

"In this lesson, you learned about renewable energy resources and nonrenewable energy resources. Think about the resources discu

ssed in this lesson and select the one that you think is the most effective in all ways. Think about the financial impact, the ability to be renewed, and the effectiveness of the energy that is produced. Write a paragraph describing why the resource you have selected is the most efficient."
I'm thinking wind energy, what else should be in this paragraph?
Physics
1 answer:
Nutka1998 [239]3 years ago
5 0
U can also add solar energy and hydro energy. Solar energy is by using the sun, while hydro is by using the force of water.
This is how hydro energy works:
its is usually built near a waterfall, OK so when the water falls of the cliff of the water fall , it creates a force which helps turn the generator and then it is carried into poles of electricity. 
Hope this helps plus i gave u extra point Good luck :)
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Calculate the total energy of 2.0 kg object moving horizontally at 10 m/s 50 meters above the surface
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We have:

Total Energy: KE + GPE
KE (Kinetic Energy) = \frac{1}{2} m*v^2
GPE (Gravitational Potential Energy) = m*g*h

Data:
m (mass) = 2.0 Kg
v (speed) = 10 m/s
h (height) = 50 m
Use: g (gravity) = 10 m/s²

Formula:

Total Energy: KE + GPE
TE =  \frac{1}{2} m*v^2 + m*g*h

Solving:
TE = \frac{1}{2} m*v^2 + m*g*h
TE = \frac{1}{2} *2.0*10^2 + 2.0*10*50
TE =  \frac{2.0*100}{2} + 1000
TE =  \frac{200}{2} + 1000
TE = 100 + 1000
\boxed{\boxed{TE = 1100\:Joule}}\end{array}}\qquad\quad\checkmark


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An object moves from position +34m to the position -15m in 15 seconds. What is the total displacement? What is the total velocit
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1) Displacement: -49 m, in the negative direction

Explanation:

The displacement of an object is a vector, whose magnitude is given by the difference between the final point of the motion and the starting point:

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2) Velocity: -3.27 m/s

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Velocity is equal to the ratio between the displacement and the time taken:

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in this problem, we have:

d = -49 m is the displacement

t = 15 s is the time

therefore, the velocity is

v=\frac{-49 m}{15 s}=-3.27 m/s

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