someone help me pls is due today and if the answer is correct I will give you brainliest and follow you backʕ ꈍᴥꈍʔ

b) 1/6

Step-by-step explanation:

You need to multiply the results from the question a) by 2.

1*2=2

6*2=12

=2/12

now simplify it

2/12

=1/6

Hope this  helps <3

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.