Q6/ Air at a density of 0.9 kg/m³ enters the intake (control face 1) of a car engine with a diameter of 0.2m at an absolute velocity of 50 km/hr (relative to the earth), as illustrated in Figure. The exhaust at a density of 0.5 kg/m3 leaves the tail of the car engine (control face 2) with a diameter of 0.1 m. The car (engine) (control volume) is traveling at an absolute velocity of 30 km/hr (relative to the earth). (a) Determine the velocity of the flow at control face 1 relative to the control volume, v1. (b) Determine the mass flow rate through the car engine. (c) Determine the absolute velocity of the flow at control face 2, v2 (abs). (d) Determine the velocity of the flow at control face 2 relative to the control volume, v2. " S0 km/he as kgm D alm D,-02 m Control volume Intake Exhaust 30 km/hr

Q6/ Air at a density of 0.9 kg/m³ enters the intake (control face 1) of a car engine with a diameter of 0.2m at an absolute velocity of 50 km/hr (relative to the earth), as illustrated in Figure. The exhaust at a density of 0.5 kg/m3 leaves the tail of the car engine (control face 2) with a diameter of 0.1 m. The car (engine) (control volume) is traveling at an absolute velocity of 30 km/hr (relative to the earth). (a) Determine the velocity of the flow at control face 1 relative to the control volume, v1. (b) Determine the mass flow rate through the car engine. (c) Determine the absolute velocity of the flow at control face 2, v2 (abs). (d) Determine the velocity of the flow at control face 2 relative to the control volume, v2. " S0 km/he as kgm D alm D,-02 m Control volume Intake Exhaust 30 km/hr

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Viscosity

The measure of the resistance of a fluid to flow is known as viscosity. Most fluids have some resistance to motion, the resistance provided by the fluid is called viscosity. This resistance is created by the force of attraction between the fluid molecules. If you pour water through a funnel, it flows easily and quickly, because it has very little resistance. But if you pour honey through a funnel, it may take a little time longer, as the density of honey is high.

Poiseuille's Law

The law of Poiseuille or Poiseuille's equation states that the pressure drop of an incompressible fluid especially a liquid in a laminar flow that passes through a cylindrical tube of length L, radius r, pressure gradient ΔP, and mainly depends on the viscosity of the fluid is nothing but the pressure difference of the layers of fluids. ΔP=P1-P2

Drag Forces

Forces that occur due to the movement of fluid are known as fluid mechanics. Following are the fluids present:

Question

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Q6/ Air at a density of 0.9 kg/m³ enters the intake (control face 1) of a car engine with
a diameter of 0.2m at an absolute velocity of 50 km/hr (relative to the earth), as
illustrated in Figure. The exhaust at a density of 0.5 kg/m3 leaves the tail of the car
engine (control face 2) with a diameter of 0.1 m. The car (engine) (control volume) is
traveling at an absolute velocity of 30 km/hr (relative to the earth). (a) Determine the
velocity of the flow at control face 1 relative to the control volume, v1. (b) Determine
the mass flow rate through the car engine. (c) Determine the absolute velocity of the
flow at control face 2, v2 (abs). (d) Determine the velocity of the flow at control face
2 relative to the control volume, v2.
te 50 km/he
A-09 kg/m
D, -02 m
Control volume
D-01 m
Intake
Exhaust
Po Var=30 km/hr
)חח

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