2 years ago

Please help, im stuck on this question

Physics

1 answer:

saw5 [17]2 years ago

8 0

Answer:

A) .27 A

Explanation:

v = ir

i = v/r

equivalent r = 45 * 90 / (45+90) = 30 ohms ( for the two r in parallel)

i = 8v / 30 ohm = 267 mAmps

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The radius of the aorta is about 1 cm and the blood flowing through it has a speed of about 30 cm/s. Calculate the average speed

puteri [66]

Answer:

The average speed of the blood in the capillaries is 0.047 cm/s.

Explanation:

Given;

radius of the aorta, r₁ = 1 cm

speed of blood, v₁ = 30 cm/s

Area of the aorta, A₁ = πr₁² = π(1)² = 3.142 cm²

Area of the capillaries, A₂ = 2000 cm²

let the average speed of the blood in the capillaries = v₂

Apply continuity equation to determine the average speed of the blood in the capillaries.

A₁v₁ = A₂v₂

v₂ = (A₁v₁) / (A₂)

v₂ = (3.142 x 30) / (2000)

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3 years ago

A 3-kg wheel with a radius of 35 cm is spinning in the horizontal plane about a vertical axis through its center at 800 rev/s. A

Kruka [31]

Answer:

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Explanation:

given,

mass of wheel(M) = 3 Kg

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I would said A is the best option if i’m wrong sorry

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Answer:

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Explanation:

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4 years ago

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