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Sphinxa [80]
3 years ago
13

What is the blocks average speed nearest hundredth of a m/s

Chemistry
1 answer:
bezimeni [28]3 years ago
6 0

The question is incomplete, the complete question is;

A block is pulled 0.90 m to the right in 2.5 s. What is the blocks average speed to the nearest hundredth of a m/s

Answer:

0.36 m/s to the hundredth place

Explanation:

Now let us remember the definition of speed. Speed is defined in physics as distance/time.

Here we have the distance as 0.9 m

We have the time as 2.5 s

Hence the average speed is obtained from;

Speed = 0.9/2.5 = 0.36 m/s to the hundredth place

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The least net force applied : Car 3(12 N)

<h3>Further explanation  </h3>

Newton's 2nd law explains that the acceleration produced by the resultant force on an object is proportional and in line with the resultant force and inversely proportional to the mass of the object  

∑F = m. a  

Car 1 ⇒m=0.5 kg, a=36 m/s²

\tt \sum F=0.5\times 36=18~N

Car 2⇒m=0.8 kg, a=50 m/s²

\tt \sum F=0.8\times 50=40~N

Car 3⇒m=0.6, a=20 m/s²

\tt \sum F=0.6\times 20=12~N

Car 4⇒m=1, a=19~m/s²

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mash [69]

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18.066 × 10²³ particles

Explanation:

Given data:

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For 3 moles of substance:

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3 mol × 6.022 × 10²³ particles/ 1 mol = 18.066 × 10²³ particles

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