consider a laser that emits energy at a rate of 212 j/s. if the laser has a wavelength of 635 nm, how many photons are emitted every 2.00 seconds?

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.