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pentagon [3]
3 years ago
13

The supersonic airliner Concorde is 62.1 m long when sittingon

Physics
1 answer:
larisa86 [58]3 years ago
6 0

Answer:

182.74020\ ^{\circ}C

Explanation:

L = Initial length = 62.1 m

\alpha = Coefficient of linear expansion of Aluminium = 24\times 10^{-6}/^{\circ}

T_i = Initial temperature = 15°C

T_f = Final temperature

\Delta L = Change in length = 25 cm

Change in length due to heat is given by

\Delta L=L\alpha \Delta T\\\Rightarrow\Delta L=L\alpha (T_f-T_i)\\\Rightarrow T_f=\dfrac{\Delta L}{L\alpha}+T_i\\\Rightarrow T_f=\dfrac{0.25}{62.1\times 24\times 10^{-6}}+15\\\Rightarrow T_f=182.74020\ ^{\circ}C

The temperature of the Concorde's skin in flight is 182.74020\ ^{\circ}C

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6 0
1 year ago
At what speed do a bicycle and its rider, with a combined mass of 110 kgkg , have the same momentum as a 1400 kgkg car traveling
DanielleElmas [232]

Answer:

<h2><u>76.36m/s</u></h2>

Explanation:

Step one:

given data

let the mass of the rider be m,=110kg

let the velocity be v=?

let the mass of the car be M,=110kg

let velocity of the car V=6m/s

Step two:

the momentum of an object is given by the expression

P=mv

<em />

Step two:

<em>since the two the bicycle rider must have the same momentum as the car,</em>

<em>then we need to equate their momentum</em>

mv=MV

110*v=1400*6

110v=8400

divide both sides by 110 to find v

v=8400/110

v=76.36m/s

<u>The rider is expected to have a speed of 76.36m/s</u>

5 0
2 years ago
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