A wire, 20m long is heated from a temperature of 5oC to 55oC. If the change in length is 0.020m, calculate the linear expansivity of the wire
1.0 x 10-3k-1
2.0 x 10-4k-1
2.0 x 10-5k-1
1.0 x 10-5k-1
2.0 x 10-6k-1
Explanation
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Discussions (11)
The Correct Answer should be C.
Use a calculator and verify the final answer of your solution.
The selected answer is wrong:
after solving using the stated formula the answer is 0.00002
The chosen option is wrong . Using the formula of linear exps. My answer is 0.00002 in standard form is 2.0*10^-5
The selected answer is wrong:
you said the answer is e where by is b that correspond to the answer.
Here is an explanation:
Linear expansivity=increase in length/(original length X temperature rise
=0.02/(20X50)=2.0X10^-5
REF: New School Physics, Page 38
Here is an explanation:
Linear expansivity=increase in length/(original length X temperature rise
=0.02/(20X50)=2.0X10^-5
REF: Check: New School Physics, Page 38
