TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Metallic bonds gives a coil of copper wire the ability to conduct electricity well.

SOLUTION: What gives a coil of copper wire the ability to conduct electricity well?

PROBLEM: Destructive interference in waves occurs two troughs what things overlap.

SOLUTION: Destructive interference in waves occurs when what things overlap?

PROBLEM: Frequency of a electromagnetic wave can be calculated using the wave equation due to their speed always being constant.

SOLUTION:
What of a electromagnetic wave can be calculated using the wave equation due to their speed always being constant?