Question
A metal ball that is 1.4 m in diameter expands by 2.5 mm when the temperature...
A metal ball that is 1.4 m in diameter expands by 2.5 mm when the temperature is increased by 95 ∘C.
a) What is the coefficient of thermal expansion for the ball?
b) What substance is this ball likely made from?
Homework Answers
Answer #1
a)
d = expansion in
diameter = 2.55 mm
d = initial diameter = 1.4 m = 1400 mm
T = increase in
temperature = 95 C
= Coefficient of
thermal expansion
Using the equation
d = dT
2.55 = (1400) (95)
= 19.2 x
10-6
b)
The ball is made of brass as brass as same coefficient of thermal expansion
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