Which methods could he use to perform his experiment?
increasing roughness and speed
increasing surface area and aerodynamic design
using nonstick materials and ball bearings
using lubricants and increasing surface area

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

. west

which three statements are true about all alloys?