B Which of the following will exert the greatest pressure when standing on the ground?
A an elephant: weight 50 000 N, area of one foot 0.2 m2
B atmospheric pressure: 105 Pa
C ballerina: weight 450 N, on one point, area 0.0015 m2
D man: weight 800 N, area of one foot 0.025 m2

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius

If anyone who can me with this hw? i would really appreciate it

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.