First of all, you need to translate this sentence in order to find out which word to use to fill the gap.
'A comb and ___ are used to comb or brush your hair.'
So, the word we need here is a brush. In Spanish, the word brush is el cepillo.
1)hermana
2)los hermanos
3)primos
4)los padres
5)los abuelos
Needs more context i don’t understand
Answer:
Efficiency = 85.5%
Explanation:
<u>Given the following data;</u>
Load = 600N
Effort = 350N
To find the efficiency of the lever, we would first of all determine the mechanical advantage and velocity ratio.
Substituting into the equation, we have;
Mechanical advantage = 1.71
Substituting into the equation, we have;

Velocity ratio = 2
Now, to find the efficiency of the lever
Substituting into the equation, we have;
<em>Efficiency = 85.5%</em>