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3 years ago

13

Answer the following questions using words from your vocabulary list. Be careful with the spelling and accent marks, so you'll g

et an accurate score. Include the definite articles el or la in your answer. What do you write on with chalk in the classroom?

2 answers:

Mrac [35]3 years ago

6 0

Escribes en una pizarra con una tiza .

Jlenok [28]3 years ago

5 0

Escribes en una pizarra de tiza.

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A load of 600N is lifted using a first class lever applying an effort of 350N .If the distance between the load and the effort i

slava [35]

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.

$Mechanical \; advantage = \frac {Load}{Effort}$

Substituting into the equation, we have;

$Mechanical \; advantage = \frac {600}{350}$

Mechanical advantage = 1.71

$Velocity \; ratio = \frac {Distance \; moved \; by \; effort}{Distance \; moved \; by \; load}$

Substituting into the equation, we have;

$Velocity \; ratio = \frac {60}{30}$

Velocity ratio = 2

Now, to find the efficiency of the lever

$Efficiency = \frac {Mechanical \; advantage}{Velocity \; ratio} * 100$

Substituting into the equation, we have;

$Efficiency = \frac {1.71}{2} * 100$

$Efficiency = 0.855 * 100$

<em>Efficiency = 85.5%</em>

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Imperfecto o pretérito? Escribe de nuevo cada oración usando el imperfecto o el pretérito. 1. Ellos miraron la televisión anoche

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Answer:

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2. Juan estaba aquí el otro día también (preterit)

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4. Comieron en aquel restaurante el sábado pasado (pretérito)

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Explanation:

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<em>look for us at Ig social media as HispanoAssist</em>

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