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iragen [17]
3 years ago
12

In which type of chemical reaction is heat absorbed from the surroundings?

Physics
2 answers:
True [87]3 years ago
7 0
Endothermic reaction
Sedaia [141]3 years ago
7 0

Answer:endothermic

Explanation:

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In 5 meters, a person running at 0.8 m/s accelerates at 1.6 m/s2. How fast 16 points
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They were going at a velocity 4.07m/s

<u>Explanation:</u>

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initial velocity u= 0.8 m/s

Acceleration a =1.6m/s2

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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
leonid [27]

Answer

given,

flow rate = p = 660 kg/m³

outer radius = 2.8 cm

P₁ - P₂ = 1.20 k Pa

inlet radius = 1.40 cm

using continuity equation

 A₁ v₁ = A₂ v₂

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Applying Bernoulli's equation

 \Delta P = \dfrac{1}{2}\rho (v_2^2-v_1^2)

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

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

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b) fluid flow rate

Q = A₂ V₂

Q = π (0.014)²  x 1.97

Q = 1.21 x 10⁻³ m³/s

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3 years ago
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