By using a machine an effort of ten newtons moved through a distance of 14metres to raise a load of 180N to height of 5metres. How many times has the machine made work easier?

6.4 times.

Explanation:

First, remember the definition of work as:

W = F*d

where W is work, F is force and d is distance.

The work applied when using the machine is:

W = 10N*14m = 140J

The work that you would apply if you did not use the machine is:

W' = 180N*5m = 900J.

The ratio W'/W is = 900J/140J = 6.4

This means that the machine has made 6.4 times the work easier. (you needed 6.4 times less work to do the task

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.

the entire statement is true and correct.  

there's no diagram, nothing is illustrated, and no question is asked.