Answer:
С. a single component that can't be separated
Explanation:
Substance : It is the pure form of matter or we can say that it is a matter that contains only one type of molecule of atom. It can not be separated by physical process.
For example : Water is a substance.
Mixture : It is a combination of different type of atoms or molecules and it is an impure form.
For example : Sodium chloride with water is a mixture.
Hence, the correct option is, (C) a single component that can’t be separated.
Answer:
Explanation:
mass of the coin m = 4.2 x 10⁻³ kg
radius of circular path r in which coin will move = 15 x 10⁻² m
coefficient of static friction μs = .7
at maximum angular velocity of ω , limiting force of friction will provide centripetal force to coin to rotate in circular path .
so centripetal force = frictional force
mω²r = μs x mg
ω²r = μs x g
ω² = μs x g / r
= .7 x 9.8 / 15 x 10⁻²
= 45.73
ω = 6.76 radian / s.
The answer is (A) hope it helps
The answer is B. metalloids
(boron, silicon, germanium, arsenic, antimony, tellurium, astatine, and polonium)
