the distance of through which a stone falls from rest is proportional to the square of the time taken t. if the stone falls 45m in 3 seconds, how far will it fall in 6 seconds? how long will it take to fall 20m?

We are given

a thermal conductivity rate of 0.03 watts (W) per meter(m) per degree celsius

so, thermal conductivity is

while we want the batting thermal conductivity in  w/cm•c

The only difference is that metre and cm

so, we need to change metre into centimeter

we know

1m =100cm

so, we can write thermal conductivity as

we can replace 1m as 100cm

now, we can simplify it

so, thermal conductivity is

................Answer