The density of ethanol is 0.789 g/mL at 20◦ C. What is the mass of 80.0 mL of ethanol at 20◦ C? a. 80 g b. 99 g c. 101 g d. 63 g

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.

a. spokes of a wheel.

as indicated in the question radial contains rad, also found in radius, so the fracture's would span the radius.