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Komok [63]
3 years ago
11

Plz help i need answers to all these questions

Physics
1 answer:
Eduardwww [97]3 years ago
8 0

Answer:

1) The net force is 5 N. The box is accelerating 10 m/s

2)  The net force is 6.986 N. It is accelerating. Normal Force is 16.986

Explanation:

1) 20 N forward - 15 N backwards = a net force of 5 N

  Acceleration: Acceleration = Net Force * Mass ( derived from Force = mass * acceleration).

a = 5 N / 2 kg

a= 2.5 m/s^2

2)

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A balloon is a sphere with a radius of 5.0 m. the force of air against the walls of the balloon is 45 n. what is the air pressur
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The air pressure inside the balloon is: 0.1432 Pa

The formulas and procedures that we will use to solve this problem are:

  • a = 4 * π * r²
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Where:

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  • r = radius
  • π = mathematical constant
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Information about the problem:

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Using the formula of the sphere area we get:

a = 4 * π * r²

a = 4 * 3.1416 * (5.0 m)²

a = 314.16 m²

Applying the pressure formula we get:

P = F/a

P = 45 N/314.16 m²

P = 0.1432 Pa

<h3>What is pressure?</h3>

It is a physical quantity that expresses the force applied on the area of a surface.

Learn more about pressure at: brainly.com/question/26269477

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