Answer:
I don't know what do u. mean
yes it does it because the material cause it to refract and the stronger it is the more it will refract
Explanation:
formula for force is:
force=mass × acceleration
but in case of friction
force =coefficient of friction × Normal Reaction
F. = u × R
U = F/R
but when placed horizontally
R= M×G
M=mass=60kg
G=Gravity(10m/s or 9.8m/s)
F=140N
U=140/60×10
U=140/600
U=0.2333333333
approximately to 3 significant figures
U=0.233
if i am correct rate it 5 star
Gregor Mendel was the first person to trace the characteristics of successive generations of a living thing.
