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Svetradugi [14.3K]
4 years ago
12

During a storm, the wind exerts a 150 n force ona window that measures 1.00 m by 0.50 m. the outside air pressure is 101 kpa. wh

at pressure in the pascals, does the wind exert on the window
Physics
1 answer:
ch4aika [34]4 years ago
7 0
Pressure = F/A

Where,
F = Force exerted = 150 N
A = Area = 1*0.5 = 0.5 m^2

Therefore,

Pressure exerted by wind on the wind = 150/0.5 = 300 N/m^2

1 N/m^2 = 1 Pa,
Then,
Pressure, P = 300 Pa
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Answer:

The kinetic energy lost in the collision is 48 J

Explanation:

Given;

mass of the first ball, m₁ = 2.0 kg

mass of the second ball, m₂ = 6.0 kg

initial speed of the first ball, u₁ = 12 m/s

initial speed of the second ball, u₂ = 4 m/s

let v be the final velocity of the two balls after the inelastic collision

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m₁u₁ + m₂u₂ = v(m₁ + m₂)

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The initial kinetic energy of the balls is calculated as;

K.E₁ = ¹/₂m₁u₁² + ¹/₂m₂u₂²

K.E₁ = ¹/₂(2)(12²) + ¹/₂(6)(4)²

K.E₁ = 144 + 48

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The final kinetic of the balls is calculated as;

K.E₂ = ¹/₂(m₁ + m₂)(v²)

K.E₂ = ¹/₂(2 + 6)(6²)

K.E₂ = ¹/₂(8)(6²)

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The lost in kinetic energy of the balls is K.E₂ - K.E₁ = 144 J - 192 J = -48 J

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