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Sergeu [11.5K]
4 years ago
6

A technician is diagnosing a car that had both front brake hoses replaced 5,000 miles ago. An inspection reveals that the right

front brake hose has ruptured. Technician A says the specifications called for DOT 3 fluid; using DOT 4 fluid caused the failure. Technician B says the brake hose was twisted and stressed too much when installed. Who is correct?a. Tech Ab. Tech Bc. Both A and Bd. None
Physics
1 answer:
Mamont248 [21]4 years ago
4 0

Answer:

Option B

Technician B only is correct

Explanation:

Technician a is wrong because the rupture was not caused by switching DOT (Department of Transportation) 3 and DOT 4 Brake fluids. As a matter of fact both brake fluids are compatible with most vehicular systems, and to a certain extent they can be used interchangeably without any adverse effect.

Technician B on the other hand, gives a more accurate reason, since a twisted brake hose will definitely fail and rupture once enough force is applied to it, which is most likely the case of what happened considering the mileage it ran before rupturing. Within this mileage, it is very possible for the pressure on the already twisted brake hose to have been damaging it gradually before finally making it to rupture.

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You are standing on a footbridge that is 12 feet above a lake. You look down and see a duck in the water. The duck is 7 feet awa
kolbaska11 [484]

Answer:

  30.22°.          

Explanation:

Given that

height of the bridge ,h= 12 ft

The distance of the lake from bridge ,L= 7 m

 Lets take angle = θ

Now by using diagram

We can say that

tan\theta =\dfrac{L}{h}

tan\theta =\dfrac{7}{12}

tan\theta=0.583

\theta=30.22^{\circ}

That is why the angle will be 30.22°.

6 0
4 years ago
The articles of confederation represented the Americans distrust of what form of government?
kondaur [170]

Answer: The Articles of Confederation were against having a strong central government.

Explanation:

7 0
3 years ago
What is "the cloud"?
Sedaia [141]

Answer:

Cloud is a condensed from of atmospheric moisture consisting of small water droplets.

Clouds cause rainfall and snow fall.

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6 0
3 years ago
Read 2 more answers
What is the maximum mass of ethyl alcohol you could boil with 2000 j of heat, starting from 19 ∘c?
RSB [31]
The boiling point of ethanol is at 78.37°C. So, the energy must include sensible heat to raise 19°C to the boiling point and latent heat to change liquid to gas. The equation would be

Energy = Sensible heat + Latent heat
Energy = mCpΔT + mΔH

For ethanol, 
Cp = 46.068 + 102,460T - 139.63T² - 0.030341T³ + 0.0020386T⁴ J/kmol·K
ΔH = 38,560 J/mol

Integrate the Cp expression to determine CpΔT:

CpΔT = ∫₂₉₂³⁵²(46.068 + 102,460T - 139.63T² - 0.030341T³ + 0.0020386T⁴ )dT
The upper limit is (78.37+273) = 352 K, while the lower limit is (19 + 273) = 292.
CpΔT = 2384857192 J/kmol·K

2,000 J = m(2384857192 J/kmol)(1 kmol/1000 mol) + m(38,560 J/mol)
m = 8.253×10⁻⁴ moles of ethanol
Since the molar mass of ethanol is 46.07 g/mol,
Mass = (8.253×10⁻⁴ mol)(46.07 g/mol)
Mass = 0.038 g ethanol
8 0
4 years ago
How much heat is absorbed by a 125 g sample of water when it is heated from 25.20 ºc to 32.80 ºc? the specific heat of water is
Fofino [41]
We can use the equation of
E = mc△T
To calculate the total heat absorbed.
E is the total heat absorbed (energy used)
m is mass.
c is specific heat capacity and
△T is the temperature change.
E = 125 x 4.184 x (32.8 - 25.2)
E = 3974.8 J
Therofre the total heat absorbed is 3974.8 joules.
4 0
3 years ago
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