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1 year ago

Lee y escoge la opción correcta. Read and select the correct option.

Spanish

1 answer:

Ghella [55]1 year ago

8 0

Answer:

If she could speak Spanish, how would a little girl ask her little brother how he is feeling, in a very casual informal way?

¿Qué tal?

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2 years ago

Yo ____________________ (leer/ver) a mi amigo Juan en la sala de clase.

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2 years ago

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Many words can I make out of the word one hundred

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2 years ago

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Which is the correct RESPONSE to the question given?

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¿A quien se los das?
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3 years ago

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:

Given the following data;

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;

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

$Efficiency = 0.855 * 100$

Efficiency = 85.5%

7 0

2 years ago