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ololo11 [35]
3 years ago
5

If you were standing under a tree, which object would appear to move?

Physics
2 answers:
kherson [118]3 years ago
6 0
B. the plane because it is flying and passing through
Stels [109]3 years ago
4 0
The tree should move because the wind will blow it
I'm not really sure
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it's called inbreeding


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3 years ago
In a very large closed tank, the absolute pressure of the air above the water is 6.46 x 105 Pa. The water leaves the bottom of t
a_sh-v [17]

Answer:

a) 35.94 ms⁻²

b) 65.85 m

Explanation:

Take down the data:

ρ = 1000kg/m3

a) First, we need to establish the total pressure of the water in the tank. Note the that the tanks is closed. It means that the total pressure, Ptot,  at the bottom of the tank is the sum of the pressure of the water plus the air trapped between the tank rook and water. In other words:

Ptot = Pgas + Pwater

However, the air is the one influencing the water to move, so elimininating Pwater the equation becomes:

Ptot  = Pgas

        = 6.46 × 10⁵ Pa

The change in pressure is given by the continuity equation:

ΔP = 1/2ρv²

where v is the velocity of the water as it exits the tank.

Calculating:

6.46 × 10⁵  =1/2 ×1000×v²

solving for v, we get v = 35.94 ms⁻²

b) The Bernoulli's equation will be applicable here.

The water is coming out with the same pressure, therefore, the equation will be:

ΔP = ρgh

6.46 × 10⁵  = 1000 x 9.81 x h

h = 65.85 meters

7 0
3 years ago
An iron has a power of 1,000w. How much energy will it electrically transfer each second?.
Mariana [72]

Answer:

P= 1000W, t = 1s ⇒ E = Pt = 1000 ∗ 1 = 1000J

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Explanation:

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Layne conducted an investigation using objects and light. She determined that light behaves differently depending on the medium.
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Do solids flow and how do they do that
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solids cannot flow because the molecules a held tightly together

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3 years ago
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