An iron ball has a diameter of 12cm and is 0.02 cm too large to pass through a hole in a brass plate when the ball and plate are at the same temperature of 25°C. At what temperature the same for both ball and plate would the ball just pass through the hole. (linear expansivties for iron and brass are 1.32×10^-5 K ^-1 and 2.0×10^-5 K^-1​

270°C

Explanation:

Since αB > αI

We want LB - LI = 0.02 cm at a given temperature t

But

ΔLB= LBαBΔt

ΔLI = LIαIΔt

Where;

LI = length of the iron

LB= length of he brass

αB = Linear expansivity of brass

αI = Linear expansivity of iron

Δt = Change in temperature

ΔLB - ΔLI =   (LBαB - LIαI)Δt = 0.02

LB = LI = 12 cm

Δt = 0.02/12( 2.0×10^-5 -  1.32×10^-5)

Δt = 0.02/12(0.68 ×10^-5)

Δt = 245°C

25°C + 245°C = 270°C

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this

pretty sure it's false