How many extra supports does it take to make a square truss stable?

If a cylindrical part with a length of 20 mm and a diameter of 20 mm is to be machined to a cylindrical part with 18 mm in diame

bulgar [2K]

Answer:

Titanium Alloy

Explanation:

Length ( L ) = 20 mm

D1 = 20 mm

d2 = 18 mm

l = 20 mm

Mechanical efficiency = 50%

power = 80 kW

cutting rake angle = 0°

cutting speed ( v ) = 10 m/s

Determine the material to be for the cylinder

In order to choose a material for the cylinder we have to calculate the cutting force

P = Fc * V

80 = Fc * 10 m/s

therefore Fc = 80 / 10 = 8 N

Hence the material we can use is Titanium Alloy due to low cutting force value

3 0

3 years ago

que sabemos de la revolución industrial y como ese proceso impulso el uso de los controles eléctricos en las industrias

Alex Ar [27]

Answer:

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Explanation:

8 0

3 years ago

The thrust F of a screw propeller is known to depend upon the diameter d,speed of advance \nu ,fluid density p, revolution per s

musickatia [10]

Answer:

screw thrust = ML $T^{-2}$

Explanation:

thrust of a screw propeller is given by the equation = p $V^{2}$ $D^{2}$ x $\frac{ND}{V}$ Re

where,

D is diameter

V is the fluid velocity

p is the fluid density

N is the angular speed of the screw in revolution per second

Re is the Reynolds number which is equal to puD/μ

where p is the fluid density

u is the fluid velocity, and

μ is the fluid viscosity = kg/m.s = M $L^{-1}$ $T^{-1}$

Reynolds number is dimensionless so it cancels out

The dimensions of the variables are shown below in MLT

diameter is m = L

speed is in m/s = L $T^{-1}$

fluid density is in kg/ $m^{3}$ = M $L^{-3}$

N is in rad/s = L $L^{-1}$ $T^{-1}$ =

If we substitute these dimensions in their respective places in the equation, we get

thrust = M $L^{-3}$ $(LT^{-1}) ^{2}$ $L^{2}$ $\frac{T^{-1} L}{LT^{-1} }$

= M $L^{-3}$ $L^{2}$ $T^{-2}$

screw thrust = ML $T^{-2}$

This is the dimension for a force which indicates that thrust is a type of force

6 0

3 years ago

In your opinion, should a marketing plan be created for each and every product under a single brand should the marketing be for

Kay [80]

Answer:

Both of them

Explanation:

When creating a marketing plan you need to think of the objective or goals that you have, you should probably always have a running campaign to help the brand itself to be constantly seen by the audience, while at the same time having specific campaigns for the products that you want to push or to promote the most. For example, not all of Nike's ads are aimed to sell more sneakers or sports clothing, some of them are just to keep them on the conversation and growing their brand, while the hype up campaign for the release of a new pair of sneakers or collection is done at the same time. So you should always go for both.

8 0

3 years ago

Suppose we have two negative charges, one located at the origin and carrying charge −9e, and the other located on the positive x

Elanso [62]

Answer:

It would have to be in between the two charges and be positive for force on 9e to be zero

k 9e q/x^2= k 36e 9e /d^2

q/x^2 = 36e/d^2

q = 36e x^2/d^2

Now we need force on 36e to be zero

k 36e q/(d-x)^2 = k 36e 9e/d^2

q/(d-x)^2 = 9e/d^2

36 x^2/d^2 = 9/d^2 (d-x)^2

36 x^2 = 9 (d-x)^2

x=d/3

q = 36e (d/3)^2/d^2 = 36e/3^2 = 4 e

7 0

4 years ago