3 years ago

Which two atmospheric gases do not react with many substances?

Physics

1 answer:

ValentinkaMS [17]3 years ago

4 0

Answer: C and B :)

This is the Apex answer.

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7. A beam of light converges at a point P. Now a lens is placed in the path of the convergent

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Answer:

Lens at a distance = 7.5 cm

Lens at a distance = 6.86 cm (Approx)

Explanation:

Given:

Object distance u = 12 cm

a) Focal length = 20 cm

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b. 1/v = 1/u + 1/f

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Lens at a distance = 6.86 cm (Approx)

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A horizontal force of 150 N is used to push a 40.0-kg packing crate a distance of 6.00 m on a rough horizontal surface. If the c

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Answer:

a. 900 J

b. 0.383

Explanation:

According to the question, the given data is as follows

Horizontal force = 150 N

Packing crate = 40.0 kg

Distance = 6.00 m

Based on the above information

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$W = 150 \times 6$

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b. Now the coefficient of kinetic friction between the crate and surface is

$\mu = \frac {F}{m\timesg}$

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= .383

We simply applied the above formulas so that each one part could calculate

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