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2 years ago

What is an example of a system and describe the energy flow through it.

Physics

1 answer:

dolphi86 [110]2 years ago

6 0

Ecosystem is an example of system.

Explanation

The best example of a system is the ecosystem.

The energy flow in the ecosystem starts from the sun which is the primary source of producing energy.

The sun provides energy to the plants and which will transfer energy to the animals or humans consuming them.

The energy is further transferred between the organisms by consumption of other organisms.

Even the decayed organisms are converted to fuel energy and the waste or unused energy is released as heat in the atmosphere.

Thus in the ecosystem, the law of conservation of energy is maintained as the energy transferred by the Sun to other organisms can be again converted to fossil energy once they have decayed.

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What is the magnitude of an electric field in which the electric force on a proton is equal in magnitude to its weight?Use 1.67×

vazorg [7]

The electric force on the proton is:

F = Eq

F = electric force, E = electric field strength, q = proton charge

The gravitational force on the proton is:

F = mg

F = gravitational force, m = proton mass, g = gravitational acceleration

Since the electric force and gravitational force balance each other out, set their magnitudes equal to each other:

Eq = mg

Given values:

q = 1.60×10⁻¹⁹C, m = 1.67×10⁻²⁷kg, g = 9.81m/s²

Plug in and solve for E:

E(1.60×10⁻¹⁹) = 1.67×10⁻²⁷(9.81)

E = 1.02×10⁻⁷N/C

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2 years ago

In flight, a rocket is subjected to four forces; weight, thrust, lift, and drag. Forces are vector quantities that have both a m

Flura [38]

Answer:

thrust

Explanation:

4 0

2 years ago

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Which of the following surface will absorb radiant heat energy best

OLga [1]

Answer:

D. Black

Explanation:

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2 years ago

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A future use of space stations may be to provide hospitals for severely burned persons. It is very painful for a badly burned pe

inessss [21]

Answer:

1.5min

Explanation:

To solve the problem it is necessary to take into account the concepts related to Period and Centripetal Acceleration.

By definition centripetal acceleration is given by

$a_c = \frac{V^2}{r}$

Where,

V = Tangencial velocity

r = radius

With our values we know that

$a_c = \frac{V^2}{r}$

$\frac{V^2}{r} = \frac{1}{10}g$

Therefore solving to find V, we have:

$V = \sqrt{\frac{1}{10}g*r}$

$V = \sqrt{\frac{9.81*200}{10}}$

$V = 14m/s$

For definition we know that the Time to complete are revolution is given by

$t = \frac{Perimeter}{Speed}$

$t = \frac{2\pi R}{V}$

$t = \frac{2\pi * 200}{14}$

$t = 1.5min$

6 0

2 years ago

What movements of water has the greatest effect on the growth of producers

kolbaska11 [484]

The movement of water that has the greatest effect on the growth of producers is upwelling.

Upwelling is a rising of a liquid. The reason upwelling is much better for producers is because it is a slow rising in the water level, preventing erosion to the topsoil and still giving the necessary amount of water and nutrients the producers need.

Thank you for your question! I hope this helped! Have an amazing day and feel free to let me know if you need any more help with anything :D

5 0

2 years ago