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Shtirlitz [24]
3 years ago
11

If a net force of 25 N is exerted over a distance of 4 m to the right on a 2 kg mass initially at rest and moves it, what is

Physics
1 answer:
astra-53 [7]3 years ago
6 0

Answer:

10 m/s

Explanation:

Force is mass times acceleration:

F = ma

25 N = (2 kg) a

a = 12.5 m/s²

Given:

v₀ = 0 m/s

Δx = 4 m

Find: v

v² = v₀² + 2aΔx

v² = (0 m/s)² + 2 (12.5 m/s²) (4 m)

v = 10 m/s

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2 years ago
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:

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Where:

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  • r = radius
  • π = mathematical constant
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  • a = surface area

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

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Applying the pressure formula we get:

P = F/a

P = 45 N/314.16 m²

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<h3>What is pressure?</h3>

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

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Normal body temperature. the average normal body temperature measured in the mouth is 310 k . what would celsius and fahrenheit
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