A wire of length 5cm is heated from a temperature of 20c to 70c if it undergoes a change in length of 2cm. calculate the linear expansivity of the wire

Orange juice has a lower or higher viscosity than chocolate syrup

What are the applications of electromagnetic waves

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.