3 m K
1 ml
L
A 20 kg object is moving on a smooth path, as shown
in the figure. Find its gravitational potential energies at
points L and M with reference to point K (Take g=10
m/s2)

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.

ya te mando la respuesta

3. dark matter

empty space could also be a simple vacuum