A particle of mass 10 kg is placed on a rough plane inclined at an angle of 30 degrees to the horizontal. What force acting parallel to the plane is required to;
i) hold the particle at rest?
ii) just make the particle move up the plane?
( Take coefficient of friction as 0.4 and force of gravity as 10 m/s^2 )

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.

the five characteristics of adolescence are biological growth and development, and undefined status, increased decision making, increased pressure and the search of self.