Questions
Distance between two places is 200km. a of metal is 2.5 × 10-5 /°C. Total space that must be left between steel rails to allow a change of temperature from 36°F to 117°F is
a
2.25km
b
0.225km
c
22.5km
d
0.0225km
detailed solution
Correct option is B
l2−l1=l1aΔtTalk to our academic expert!
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