Consider a flat steel plate with a hole through its center . When the plates temperature is decreased, the hole will .
a . contract only if it takes up more than half the plate’s surface area.
b . expand if it takes up less than half the plate’s surface area.
c . contract.
d . expand.
. . . continues Solution: Contract
Heat & Thermodynamics
708
High school
Which two temperature changes are equivalent ?
a. 1 degree F = 1 degree C
b. 1 degree C = 1 K
c. 1K = 1 degree F
. . . continues Solution: 1^oC = 1K
Heat & Thermodynamics
778
High school
Latent heat of fusion of water 334000 J/kg
Year’s ago , a block of ice with a mass of about 21 kg was used daily in a home icebox , The temperature of the ice was 0.0 degree C , when delivered . As it melted how much heat did a block of ice that size absorb ? Answer in units of J .
. . . continues Solution: Heat absorbed = mL = 21 x 334000 J = 7014000 J
