Author Question: The Concorde's exterior is made of aluminum, which has a coefficient of linear expansion of 24 ... (Read 145 times)

tfester · **on:** Jul 29, 2018

The Concorde's exterior is made of aluminum, which has a coefficient of linear expansion of 24 10-6K-1. At 15C, the Concorde measures 62.1 m in length.

When the plane is in flight, friction with the air increases the temperature of the exterior skin to 200C. What is the change in the length of the outer skin of the Concorde?
A)

20 cm

B)

24 cm

C)

28 cm

D)

32 cm

E)

36 cm

Question 2

Is it possible for kinetic energy to increase during an inelastic collision? Explain.

What will be an ideal response?

nguyenhoanhat · **Reply #1 on:** Jul 29, 2018

Answer to Question 1

C

Answer to Question 2

Yes, during an inelastic collision potential energy (such as chemical or nuclear) can be released. In which case the total kinetic energy after the interaction can be greater than the initial kinetic energy.