Answer:
Option D.
Explanation:
The correct answer is Option D.
The shrinkage of the bridge material is because of thermal contraction.
Thermal contraction and thermal expansion are the phenomena of the bridge material which takes place due to the change in temperature of the atmosphere.
When the temperature of the surrounding increases expansion of the bridge material takes place and when temperature decreases the contraction of the material takes place.
This phenomenon sometimes damages the structure because due to continuous expansion and contraction of materials strength of the bridge decreases.
Hey there!
<span>How much kinetic energy does a care 1000 kg car moving at 7 m/s have?
Answer:
</span><span>A. 24500 J
Hope this helps
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Answer:
Explanation:
Given
Frequency of an object in SHM is
Frequency in SHM is given by
where k=spring constant
m=mass of object
if spring is exchanged such that new spring constant is half of previous one then
i.e.