What is the change in length of a 3.00-cm-long column of mercury if its temperature changes from 37.0ºC to 40.0ºC , assuming the mercury is unconstrained?

A weather balloon rises through the atmosphere, its volume expanding from 4.9 m3 to 14 m3 as the temperature drops from 21 ∘C to -10 ∘C. If the initial gas pressure inside the balloon is 1.0 atmatm, what is the final pressure?

For item 42: Table D2 Determination of Specific Heat of a Metal Initial mass of metal, mm (g) Initial temperature of metal, Tm,0 (°C) Initial mass of water, mw (g) Initial temperature ofwater, Tw,0 (°C) Final Temperature of mixture, T,(°C) Experimental Specific Heat cal of metal Cexp Actual Specific Heat of cal metal Cact g.Cº. Percentage Error Copper 30 42.) 110 43.) 125 20 21.94 0.9195 % For Item 42: choices for number 42 0.9180 0.9436 0.9513 0.8154 0.8354 For item 43: choices for number 43 0.17 O 0.16 0.15 0.18 0.19

An iron rod with an initial length of 11.1 m has its temperature raised from 16o C to 30.35o C. If iron has a coefficient of thermal expansion of  12x10-6 1/oC, what is the change in length of the rod in mm?