Question
20.00 cm of space is available. How long a piece of brass at 20°C can be put there and still fit at 200°C? Brass has a linear expansion coefficient of 19 × 10^-6/C°.
1-19.93 cm
2-19.69 cm
3-19.50 cm
4-19.09 cm
1-19.93 cm
2-19.69 cm
3-19.50 cm
4-19.09 cm
Answers
Henry
L = Lo + a(T-To)Lo = 20 cm
Lo + 19*10^-6(200-20)Lo = 20
Lo + 0.00342Lo = 20
1.00342Lo = 20
Lo = 19.93 cm. = Initial length.
Lo + 19*10^-6(200-20)Lo = 20
Lo + 0.00342Lo = 20
1.00342Lo = 20
Lo = 19.93 cm. = Initial length.