First real answer i’ll give Brainlyist

A eutectic alloy is which of the following (two correct answers): (a) the composition in an alloy system at which the two elemen

NeTakaya

Answer:

Option (c) and option (d)

Explanation:

Eutectic system is one in which a solid and homogeneous mixture of two or more substances resulting in the formation of super lattice is formed which can melt or solidify at a temperature lower than the melting point of any individual metal.

Eutectic alloys are those which have its components mixed in a specific ratio.

It is the composition in an alloy system for which both the liquidus and solidus temperatures are equal.

Eutectic alloys have the composition in which the melting point of the metal is lower than the other alloy composition.

3 0

3 years ago

Determine the mass of a car that weight 3,500 lbs both in slugs and kilograms. The answer should be in kilograms.

Andreas93 [3]

Answer:

The mass of car in slug =108.5 slug.

The mass of car in kilogram =1575 Kg.

Explanation:

Given that

Mass of car = 3500 lbs

We know that

1 lbs =0.031 slug

So

3500 lbs = 0.031 x 3500 slug

So the mass of car in slug =108.5 slug.

We know that

1 lbs =0.45 kilograms

so

3500 lbs = 3500 x 0.45 Kg

So the mass of car in kilogram =1575 Kg.

4 0

3 years ago

An open tank in a petroleum company lab contains a layer of oil on top of a layer of water. The water height is 5 times the oil

maks197457 [2]

Answer:

Explanation:

Given

specific gravity of oil=0.79

height of oil column is h

height of water column is 5h

Gauge pressure at bottom is equivalent to $26.9\ mm$

$P_{gauge}=\rho_{Hg} gh_{Hg}$

$P_{gauge}=13.6\times 10^3\times 9.8\times 26.9\times 10^{-3}\ Pa$

Pressure due to oil and water at bottom

$P=\rho _{oil}hg+\rho _{w}5hg$

$P=0.79\rho _whg+5\rho _whg=5.79\rho _{w}hg$

$P_{gauge}=P$

$13.6\times 10^3\times 9.8\times 26.9\times 10^{-3}=5.79\times 10^3\times 9.8\times h$

$h=63.18\ mm$

6 0

3 years ago

18. The #2 on the diagram below represents what?

AveGali [126]

Answer:

represents the fact that there is no diagram

Explanation:

it makes sense

3 0

2 years ago

The roof of a house has three layers: (1) 2 inch thick pine, (2) 4 inches of fiberglass insulation and (3) 0.1 inch thick Asphal

Alex17521 [72]

Answer:

the rate of flow of heat through the roof is 45616.858 BTU/hr

Explanation:

Given the data in the question;

pin thickness $t_p$ = 2 in

fiber glass thickness $t_f$ = 4 in

Asphalt shingles thickness $t_a$ = 0.1 in

R/inch for pine = 1.28

R/inch for fiberglass = 3.0

R/inch for Shingles = 4.0

Temperature inside the house $T_{inside$ = 700 F

Temperature outside the house $T_{outside$ = 300 F

area of the roof A = 500 ft²

we calculate the total Resistance;

R = ( 2 × 1.28 ) + ( 4 × 3.0 ) + ( 0.1 × 4.0 )

R = 2.56 + 12 + 0.4

R = 14.96

Now, we determine the rate of heat flow;

dQ/dt = ΔT(A) / R

⇒ ( $T_{inside$ - $T_{outside$ )A / R

we substitute

⇒ (( 700 - 300 ) × 500 ) / 14.96

⇒ ( 400 × 500 ) / 14.96

⇒ 200000 / 14.96

⇒ 13368.98 watt

we know that 1 watt = 3.412142 BTU/hr

⇒ ( 13368.98 × 3.412142 ) BTU/hr

⇒ 45616.858 BTU/hr

Therefore, the rate of flow of heat through the roof is 45616.858 BTU/hr

6 0

3 years ago