What is the effect of the following variables on the strength
electromagnet?
1. tightness of the wire coiled around the nail
2. number of coils of wire around the nail
3. number of dry cells used
4. size of nail
ing Task 3 Inside the hoy list do​


Sagot :

Answer:

4.It was associated with nails when they were hand-forged, one at a time. Some say a hundred 3-1/2 inch nails would have cost 16 pennies and thus became known as 16-penny nails. Others say that the number and the “d” indicate that one 16d (3-1/2 inch) hand-forged nail cost 16 pennies.

Explanation:

#carryonlearning