A tight knot can be easily opens by using a longer spanner. Give reasons

It is because the effort distance is greater than the load distance

Explanation:

As we know, Effort×effort distance = load × load distance

So when effort distance is increases,

The effort decreases

So when the spanner’s handle is long

A tight knot can easily be opened by less effrot

I hope it helped

wavelength divides in half and speed stays the same.

the answer is a. hope this .