The filament of a lightbulb has a resistance of r0=12ω at 20 ∘c and 140 ω when hot. part apart complete part b in this temperature range, what is the percentage change in resistance due to thermal expansion? express your answer using two significant figures. rexpansion−r0r0r e x p a n s i o n − r 0 r 0 = 1100 %

If the temperature were raised very high, classically what would we expect the heat capacity per object to be for this one-dimensional system? give a numerical value. chigh t = __ j/k/object (one reason for the discrepancy is that the high-temperature limit assumes that the number of oscillators is large (n > > 1), which is not the case in this tiny system.)

True or false graphs must include scales that increase by the same amount

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.