4a wheel starts from rest and has an angular acceleration of 4.0 rad/s2. when it has made 10 rev determine its angular velocity.]

= 22.41rad/s

Explanation:

First, we know that:

a = 4 rad/s^2

S = 10 rev = 62.83 rad

Now we know that:

where is the final angular velocity, the initial angular velocity, a is the angular aceleration and S the radians.

Replacing, we get:

Finally, solving for :

= 22.41rad/s

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

vapour or gas assuming atmospheriv pressure