Answer to Question #299569 in Physics for Totti

Question #299569

Calculate the change in temperature of an 900mm aluminium bar, that has increased in length to 901.035mm.

α = 25 x 10^-6k^-1

Expert's answer

Given:

$l_0=900\:\rm mm$

$\alpha=25*10^{-6}\:\rm K^{-1}$

$l=901.035\:\rm mm$

The thermal expansion is described by an equation

\Delta l=l_0\alpha\Delta t

\Delta t=\frac{\Delta l}{\alpha l_0}\\ =\rm \frac{901.035-900}{25*10^{-6}*900}=46\:{^\circ C}

Learn more about our help with Assignments: Physics

Comments

No comments. Be the first!

Leave a comment

Related Questions

1. A boy who is riding a bicycle moves with an initial velocity of 5 m /s. Tenseconds later, he is movi
2. Calculate the change in length of a 100mm aluminium bar that has increased in temperature by 55⁰C.
3. 100 cm of brass increased by 0.18 cm when its temperature rises by 95°C. What is the linear expansi
4. An iron rod has a length of 70m when the temperature is 30°C. By how much will it expand when the t
5. An iron rod has a length of 70m when the temperature is 30°C. By how much will it expand when the t
6. A stone is thrown horizontally at 20 m/s from the top of a cliff 63 m high. How fast is it moving th
7. A crate weighing 490 N is pushed along a surface. If it takes 126 N to get the crate starts to move