Scientific research is sometimes compared to a two-wheeled bicycle. In this comparison, which of the following explains the metaphorical description of the front wheel as beliefs versus what scientists refer to as ideas? a synonymous use of words to represent reality a logical difference arising from the profession a misunderstanding of the same phenomenon a cultural use of words born out of conversation

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.

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.

490 n

f=125n a=2.5m/s2