If the mass of the pendulum bob is doubled, predict the change in kinetic energy. A)
It remains constant.
B)
It is double the orginal KE.
It is one-half the original KE.
D)
It is four times the orginal KE.

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.

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

it was given as a lesson and guide for prayer.