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PIT_PIT [208]
2 years ago
14

List and define all of Newton’s laws of motion.

Physics
1 answer:
Luba_88 [7]2 years ago
6 0

Answer:

In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

Explanation:

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A Venturi tube may be used as a fluid flowmeter. Suppose the device is used at a service station to measure the flow rate of gas
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Answer

given,

flow rate = p = 660 kg/m³

outer radius = 2.8 cm

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inlet radius = 1.40 cm

using continuity equation

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 π r₁² v₁ = π r₁² v₂

 v_1= \dfrac{r_1^2}{r_2^2} v_2

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Applying Bernoulli's equation

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 \Delta P = \dfrac{1}{2}\rho (v_2^2-(0.25 v_2)^2)

 \Delta P = \dfrac{1}{2}\rho v_2^2 (1 - 0.0625)

 v_2=\sqrt{\dfrac{2\Delta P}{\rho(1 - 0.0625)}}

 v_2=\sqrt{\dfrac{2\times 1200}{660 \times(1 - 0.0625)}}

       v₂ = 1.97 m/s

b) fluid flow rate

Q = A₂ V₂

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Q = 1.21 x 10⁻³ m³/s

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3 years ago
Which of the following is an example of a chemical change?
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b. burning paper

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