Answer:
En el salón de clases hay dos ventanas abiertas.
En el salón de clase hay una profesora.
En el salón de clase hay muchos niños aprendiendo.
En el salon de clase hay varios dibujos en la pared
Explanation:
Four phrases describing things in the class room. 1There are two open windows. 2There is a teacher. 3.There are a lot of kids learning. 4There are drawings on the wall.
The first person indicative differs between the two (i.e -imos and -emos)
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>