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physic

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HI!can anyone help me please, just on part b.Thank you so much.
A spherical steel ball bearing has a diameter of 2.540 cm at 23°C.
(a) What is the diameter when its temperature is raised to 94°C?
___ cm

(b) What temperature change is required to increase its volume by 0.9%?
____°C I need help on part b only, Thank again.

  • physic -

    what is the initial volume? What is the coefficent of volume expansion for steel?

    Use the equation to find new volume, then find diameter.

    b) same technique, you know the volume change.

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