PLS ANSWER FAST WILL GIVE What is the overall charge of an atom?

The nucleus has an overall positive charge as it contains the protons. Every atom has no overall charge (neutral). This is because they contain equal numbers of positive protons and negative electrons. These opposite charges cancel each other out making the atom neutral.

a) I= 0.0183 kg.m²

b) τ = 3.846 × 10⁻³ N.m

c) = 0.07315 m/s²

d) 62 revolutions

Explanation:

Given:

Mass of the wheel, m = 0.15 kg

radius of the wheel. r = 0.35 m

Angular speed, ω = 2 rev/s = 2 × 2π rad/s = 4π rad/s

a) The moment of inertia for a wheel is given as:

I = mr² = 0.15 × 0.35²

or

I= 0.0183 kg.m²

b) The torque is given as:

τ = Iα

where α is the angular acceleration

on substituting the values, we have

or

α = -0.209 rad/s²

substituting the α in the formula for torque, we get

τ = 0.15 × 0.35² × 0.209 = 3.846 × 10⁻³ N.m

c) The centripetal acceleration is given as:

on substituting the values, we get

= 0.07315 m/s²

d) To calculate the revolutions made by the wheel while coming to rest is given as:

on substituting the values, we get

or

rad

or

revolutions

or

60 revolutions

thus, total revolutions made is 60 + 2 = 62 revolutions.