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goldfiish [28.3K]
4 years ago
9

What is a coarse-grained rock composed of intermediate plagioclase feldspar and pyroxene? a. graniteb. gabbro c. andesited. peri

dotitee. diorite
Engineering
1 answer:
liubo4ka [24]4 years ago
7 0

Answer:

B.gabbro

Explanation:

Gabbro is a coarse-grained, dark-colored igneous

rock . It is usually black or dark green in color and composed mainly of the minerals plagioclase and augite. It is the most abundant rock in the deep oceanic crust. Gabbro is used in construction.

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Are the wooden pillars shown in the image below, a dead load?
Brrunno [24]

Answer:

no

Explanation:

it's not a dead load because when load is put on the pillars it's not fully straining it's been slowly getting to be heavier in that period of time before it falls

6 0
3 years ago
A slip and fall prevention component should have which of the following elements?
VLD [36.1K]

Answer:

Option D

All of the above

Explanation:

The components of slip and fall prevention for any engineering organization should incorporate a policy statement and employee footwear program. Moreover, it should also have a review and approval of walkways hence all the choices provided are valid.

7 0
3 years ago
A precision miling machince wighing 1000lb is supported on a rubber mount. The force deflection relationship of the rubber mount
Alisiya [41]

Answer:

0.2846 in

Explanation:

The static equilibrium position of the rubber mount ( x^*), under the weight of the milling machine,  can be determined from:

1000=3500(x^*)+ 55(x^*)^3\\\\55(x^*)^3+ 3500x^*-1000=0\\\\Solving\ for\ the\ roots\ using \ a \ calculator\ or\ matlab\ gives:\\ \\x^*_1=0.28535\\x^*_2=-0.14267+7.89107i\\x^*_3=-0.14267-7.89107i\\\\We\ are\ using\ the \ real\ root\ which\ is\ x^*_1=0.28535\\

k=\frac{dF}{dx}|_{x^*}\\ \\k=\frac{d}{dx}(3500x+55x^3)|_{x^*}\\\\k=3500+165x^2|_{x^*}\\\\k=3500+165(x^*)^2\\\\k=3500+165(0.28535)^2=3513.435\ lb/in

The static equilibrium position is at:

x=\frac{F}{k}=\frac{1000}{3513.435}  =0.2846\ in

8 0
3 years ago
assume the skin friction drag on the airfoil is essentially that for a flat plate with the boundary layer being laminar and inco
neonofarm [45]

Preliminary studies found that skin friction drag accounts for between 20 to 40% of overall drag.

<h3>Explain about the skin friction?</h3>

Aerodynamic drag, which is a resistive force applied to an object moving in a fluid, includes skin friction drag.

The viscosity of a fluid as it passes across a surface is what creates skin friction. Its size is determined by the fluid's viscosity, the amount of wetted (or total) surface area in contact with it, and the degree of roughness of the surface.

Skin friction is important because it plays a role in the erosion of sediment particles from the water-bed boundary condition. Regarding the vertical mixing of the sediment over the water depth, form drag-related turbulence (separation-induced eddies, etc.) is significant.

To learn more about skin friction refer to:

brainly.com/question/14174373

#SPJ4

6 0
2 years ago
3
crimeas [40]
It will be c I think
3 0
3 years ago
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