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sattari [20]
3 years ago
10

How does energy keep the world going? How is energy conserved?​

Physics
2 answers:
MrRissso [65]3 years ago
7 0

Answer:

The most notable way that reducing energy helps the environment is by decreasing power plant emissions.

Ad libitum [116K]3 years ago
3 0

Answer:

Explanation:

The conservation of energy law states that energy cant be created or destroyed, only transferred. Since energy cant be created or destroyed, the amount of energy in the universe is completely constant.

Energy keeps the world "going" because we use it every single day in our life. Everything in the universe uses some sort of energy. We digest food for energy, we use electrical energy for electronics, we convert electrical energy into heat energy for heaters and such, we use solar panels to power our houses. There are countless examples of how energy keeps the world "going."

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What is inertia?
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Answer: C. The tendency of an object to maintain its state of motion.

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3 years ago
A sample of argon gas has a volume of 6 liters at a temperature of 7*C. What volume does the gas occupy at 147*C?
Nady [450]

9L

Explanation:

Given parameters:

Volume of gas = 6L

Initial Temperature = 7°C to kelvin = 273 + 7 = 280K

Final temperature = 147°C to kelvin = 273 + 147 = 420K

Unknown:

Final gas volume = ?

Solution:

To solve this problem, we are going to use Charles's law. Charles's law states that "the volume of a fixed mass of a gas varies directly as its absolute temperature if the pressure is constant".

 Mathematically;

   \frac{Initial volume }{Initial temperature }  = \frac{final volume }{final temperature}

Input the parameters;

   \frac{6}{280}  = \frac{V}{420}

  V = \frac{6 x 420}{280} = 9L

learn more:

Charles's law brainly.com/question/7434588

#learnwithBrainly

8 0
4 years ago
Which subject of a science experiment would not be useful to have a physical model included?
Len [333]
C.) and equation on forces
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3 years ago
A 5.7 kg block attached to a spring executes simple harmonic motion on a frictionless horizontal surface. At time t = 0s, the bl
Genrish500 [490]

Answer:

Explanation:

Given

mass of block m=5.7\ kg

at t=0 s

displacement is x=-0.7\ m

velocity v=-0.8\ m/s

acceleration a=2.7\ m/s^2

suppose x=A\cos (\omega t+\phi )   is the general equation of SHM

where A=amplitude

\omega=natural frequency of oscillation

therefore velocity and acceleration is given by

v=-A\omega \sin (\omega t+\phi )

a=A\omega ^2\cos (\omega t+\phi )

for t=0

-0.7=A\cos (\phi )---1

v=-0.8=-A\omega \sin(\phi)---2

a=2.7=-A\omega ^2\cos(\phi )----3

divide 1 and 3 we get

\omega ^2=\frac{27}{7}

\omega =\sqrt{\frac{27}{7}}

Now square and 1 and 2 we get

(0.7)^2+(\frac{0.8}{\omega })^2=A^2

A^2=0.49+0.166

A=0.81\ m

     

3 0
3 years ago
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