Rahul sits in a chair reading a book. Which force is equal to the force Rahul exerts on Earth? Rahul’s weight
Rahul's mass
the sum of the weights of Rahul and the book
the sum of the weights of the chair, Rahul, and the book

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.

Does heating a metal wire increase or decrease its electrical resistance? why?

What is the answer to these problems 30 pt