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guapka [62]
3 years ago
6

A car is traveling at 20 minutes/second and is brought to rest by applying brakes over a period of 4 seconds.What is it average

acceleration over this time interval?
Chemistry
1 answer:
Neporo4naja [7]3 years ago
5 0

-5m/s

Explanation:

Given parameters:

Speed of the car = 20m/s

Time taken = 4s

Unknown:

Average acceleration = ?

Solution:

Acceleration is the change in velocity or speed with time of a body.

  Acceleration = \frac{v - u}{t}

 v is the final velocity = 0

 u is the initial velocity

 t is the time

Input the values:

   Acceleration = \frac{0-20}{4}  = -5m/s

learn more:

Acceleration brainly.com/question/3820012

#learnwithBrainly

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yaroslaw [1]

Answer : The fugacity in the solution is, 16 bar.

Explanation : Given,

Fugacity of a pure component = 40 bar

Mole fraction of component  = 0.4

Lewis-Randall rule : It states that in an ideal solution, the fugacity of a component is directly proportional to the mole fraction of the component in the solution.

Now we have to calculate the fugacity in the solution.

Formula used :

f_i=X_i\times f_i^o

where,

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Now put all the give values in the above formula, we get:

f_i=0.4\times 40\text{ bar}

f_i=16\text{ bar}

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Reason:

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