Angela tries to pick up a copper penny using a bar magnet, but the penny does not move. then, she tries to pick up an iron nail using the bar magnet, and the nail lifts up toward the magnet. her teacher tells her that the magnet lifts the iron nail because it is a ferromagnetic material. which of the following best describes a ferromagnetic material?

a.) a material that easily conducts electricity

b.) a material with naturally strong magnetic properties

c.) a material made of non-metals that produce magnetic fields

d.) a material that produces its own magnetic field

Mr. j, age 42, is a construction worker in las vegas. he recently noticed that a mole on his face seemed to be getting larger and darker. at first he did not worry because he was in the sun a lot and assumed the change may have been caused by sunburn. after a month, not only was the mole larger and darker, but it appeared to be “bumpy.” his doctor diagnosed a malignant melanoma skin cancer following biopsy of the nevus. mr. j reports pain in his right shin that does not go away when he puts his feet up or sleeps. discussion questions 1. relate mr. j’s skin changes to the warning signs for malignant melanoma. (see malignant melanoma.) 2. discuss the normal progression of this malignancy. what is the significance of the bone pain that mr. j is experiencing? (see malignant melanoma.) 3. discuss the treatment available for this patient and the prognosis for recovery. (see malignant melanoma.)