How much work must be done on a particle with a mass of m to accelerate it from a speed of 0.900c to a speed 0.990 c ? (Express the answer in terms of mc2.)

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

f=ma a/f/m a= 480/60 a = 8m/s/s that is quick wow

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.