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Answer:
165.11 K Pa
Explanation:
Applying Bernoulli theorem ,the problem which deals with the conservation of energy of a flowing fluid , we have
P + 1/2ρ v² + ρgh = constant
P represents pressure , ρ represents density of liquid flowing v is velocity, h is the height from the ground.
P₁ + 1/2ρ v₁² + ρgh₁ =P₂ + 1/2ρ v₂² + ρgh₂
Substituting the values we get
46.4 x 10³ + .5 x 1000 x (4.37)²+ρg( h₁ - h₂) = P₂ + .5 X 1000x(4.37/4)²
46400+ 9548.45 +1000x 9.8 x 11.2 = P₂ +596.78
P₂ = 165.11 K Pa
Answer:
Ahmed did more work in lifting the weight than Omar.
Explanation:
Work done can be determined as the product of a force and the distance moved in the direction of the force.
Work done = F x s
In the given question, since the weight is lifted through a height, then the work done equals potential energy.
i.e Work done = Potential energy
= mgh
But,
Force = weight = mg
So that,
Work done = Fh
where F is the weight and h is the height.
i. Work done by Omar = Fh
= 200 x 2.0
= 400
Work done by Omar is 400 Nm.
ii. Work done by Ahmed = Fh
= 200 x 2.1
= 420
Work done by Ahmed is 420 Nm.
Thus, Ahmed did more work in lifting the weight than Omar.
Given a steel rod:
Radius = r = 10 mm = 0.010 m.
Length L = 1 m.
Tensile Force = F = 100 kN.
Young's Modulus = Y = 2.0 &* 10¹¹ Nm⁻²
a) Stress = Force/cross sectional area
σ = F / A
= 100,000 /(π 0.010²) Pa
= 318.309 MPa
b) Y = (F/A) / (ΔL/L)
Elongation ΔL = L F / (A Y)
= L σ / Y
= 1 * 318.309 * 10⁶ / 2.0 * 10¹¹ m
= 1.591 mm
c) Percentage elongation : ΔL/L * 100 = 0.1591 %
Science is connected to spirituality in that they both deal with the body, soul, and mind. Science study's the makeup of the body, soul, and mind in it's relationship with health and survival. Spirituality deals with the inside of the body, soul, and mind. It is interested in how inner entities create outer entities.
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