A 6.2-mm-diameter electrical transmission line is exposed to windy air. Determine the drag force exerted on...

A 6.2-mm-diameter electrical transmission line is exposed to windy air. Determine the drag force exerted on a 165-m-long section of the wire during a windy day when the air is at 1 atm and 15°C and the wind is blowing across the transmission line at 65 km/h.

The density and kinematic viscosity of air at 1 atm and 15°C are ρ = 1.225 kg/m³ and ν = 1.470×10^-5 m²/s.

_____ N

Solutions

Expert Solution

samet mamat answered 7 months ago

Next > < Previous

Related Solutions

When a parachute opens, the air exerts a large drag force on it. This upward force...

When a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky diver and, thus, slows him down. Suppose the weight of the sky diver is 852 N and the drag force has a magnitude of 1018 N. The mass of the sky diver is 86.9 kg. Take upward to be the positive direction. What is his acceleration, including sign?

Conceptual Questions: Does two charged objects require contact for an electrical force to be exerted on...

Conceptual Questions: Does two charged objects require contact for an electrical force to be exerted on the other charged object? What equation can we use to relate the electric field to electrical force? Describe the variables of the equation. When there is only a positive charge in the electric field, what is the direction for the electric field and what is the direction for the electric force, in relation to the charge? When there is only a negative charge in...

What is the kinetic energy of the sphere when it is 4.80cm from the line of charge if the only force on it is the force exerted by the line of charge?

A very small sphere with positive charge q=+6.00μC is released from rest at a point 1.30cm from a very long line of uniform linear charge density λ=+2.00μC/m.Part AWhat is the kinetic energy of the sphere when it is 4.80cm from the line of charge if the only force on it is the force exerted by the line of charge?Express your answer with the appropriate units.

4- If the drag force on a smooth sphere depends on the velocity (V), sphere diameter...

4- If the drag force on a smooth sphere depends on the velocity (V), sphere diameter (D), viscosity (?), and density (?), use dimensional analysis to show the drag coefficient on the sphere is a function of the Reynolds number only. (15%) ?

a=2 b=1 A bullet is to be tested in the laboratory to determine the drag force...

a=2 b=1 A bullet is to be tested in the laboratory to determine the drag force on it. Dependent parameter the drag force D (Newton) depends on the velocity of the bullet V(m/s), the length of the bullet L(m), sound velocity c(m/s), density of fluid ρ (kg/m3) and dynamic viscosity µ(kg/ms). Solve the problem by making the necessary assumptions and drawing the schematic figure I-Determine the nondimensional p parameters using repeating variables ii-a bullet with a speed of 9a,b m/s...

For a kerosene drop with an initial diameter of 1 mm in air at 700°C and...

For a kerosene drop with an initial diameter of 1 mm in air at 700°C and 1 atm absolute pressure, (a) find the time to vaporize 50%, 90% and 100% of initial mass of the droplet, and (b) what is the mass flow rate from the droplet when the droplet is 50% and 90% vaporized?

A coaxial air transmission line has a solid conductor with a radius a on the inside...

A coaxial air transmission line has a solid conductor with a radius a on the inside and a very fine conductor with an inner radius on the outside. The conductors of this L-length coaxial transmission line include a lossy dielectric with electrical permeability E1, conductivity o1 and magnetic permeability u0 in the region a<r <c, and a lossy dielectric with electrical permeability E2, conductivity o2 and magnetic permeability u0 in the region of c <r <b. According to this, a)...

Catalyst pellets of 5 mm diameter are to be fluidized with 45,000 kg/h of air at...

Catalyst pellets of 5 mm diameter are to be fluidized with 45,000 kg/h of air at 1 atm and temp. 30 C in a vertical cylindrical vessel. The density of the catalyst particles is 850 kg/m3; their sphericity is 0.85. The given quantity of air is just sufficient to fluidize the solids. Determine the vessel diameter and terminal velocity. Show pressure drop versus superficial velocity characteristic curve showing both fixed and fluidized bed region. Assume void fraction (under fixed bed...

Air flows in a pipe with a diameter, D=50 mm. The inlet conditions are: M1 =...

Air flows in a pipe with a diameter, D=50 mm. The inlet conditions are: M1 = 3; total pressure, P01 = 1000 kPa absolute; and temperature, T1 = 550 K. The friction coefficient is, f = 0.004. The exit Mach number decreases with the length of the pipe. Plot the following while the exit Mach number to be changed from 2.5 to 0.99 with decrements of ?M=0.01: a) L, length of the pipe that is going to give the desired...

Consider a pipe (diameter of 50 mm) with air flowing through it. The inlet conditions are:...

Consider a pipe (diameter of 50 mm) with air flowing through it. The inlet conditions are: Mach 3; total pressure = 1000 kPa and 550 K. The friction coefficient (f) is 0.004. The exit Mach number decreases with the length of the pipe. Assume adiabatic, steady flow. Write a short Matlab code and plot the following, while the exit Mach number changes from 2.5 to 0.99 with increments of ?M=0.01. Find the length of the pipe that is going to...

Subjects