001 10.0 points In a particular television tube, a beam of
electrons has a current of 4.2 x 10-A
How long does it take for 5.72 x 1014 elec-
trons to strike the screen? The fundamental
charge is 1.602 x 10-19 C.
Answer in units of s.

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.