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Arturiano [62]
3 years ago
10

Pls fast as you can it is a test pls pls

Physics
1 answer:
bixtya [17]3 years ago
5 0

Answer:

give brainly first then i will

Explanation:

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Net upward force = 2373.72N

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The concept of Pressure = Force/Area is applied as the steps are shown in the attachment

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3 years ago
At which point or points is the electric potential zero.
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The electric potential from a single charge is defined to be zero an infinite distance from the charge, and the electric potential associated with two charges is also defined to be zero when the charges are infinitely far apart.

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2 years ago
Contrast electron movement within conductors and insulators.
irina1246 [14]

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Below

Explanation:

● What makes conductors special is that they have some free electrons that can move.

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3 years ago
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What is the critical angle of a light beam passing drim a medium(n=2) to a medium (n=1.5)
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3 years ago
On flat ground, a 70-kg person requires about 300 W of metabolic power to walk at a steady pace of 5.0 km/h (1.4 m/s). Using the
Darina [25.2K]

Answer:

C 350W

Explanation:

Given power output to walk on a flat ground to be 300W, h = 0.05x, v = 1.4m/s

m = 70kg and g =9.8m/s².

x = horizontal distance covered

Total energy used = potential energy used in climbing and the energy used in a walking the horizontal distance.

E = mgh + 300t

Where t is the time taken to cover the distance

x = vt and h = 0.05vt

So

E = mg×0.05×vt + 300t

Substituting respective values

E = 70×9.8×0.05×1.4t +300t = 348t

P = E/t = 348W ≈ 350W.

4 0
3 years ago
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