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Allisa [31]
3 years ago
14

Question 5 of 10

Physics
1 answer:
Nina [5.8K]3 years ago
6 0
It is D 14 MS. West. Kauehfbfnd
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At a constant temperature, the volume of a gas doubles when the pressure is reduced to half of its original value. This is a sta
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Derive an equation of motion s=ut+1/2at2 for an object moving in straight line​
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sut12at2

Explanation:

sorry just need points

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Which factor is a component of skill-related fitness?
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Starting at its rightmost position, it takes 2 seconds for the pendulum of a grandfather clock to swing a horizontal distance of
sdas [7]

Answer:

The correct answer is b,  x = 9 cos (pi / 2 t)

Explanation:

The equation that describes a simple pendulum is

             θ  = θ₀  cos (wt + φ)

The angle is measured is radians

            θ = x / L

We replace

           d / L = x₀ / L cos (wt + φ)

            x₀ = 9 in

         

We replace

             d = 9 cos (wt + φ)

Angular velocity is related to frequency and period.

           w = 2π f = 2π / T

The period is the time of a complete oscillation T = 4 s

           w =2π / 4

           w = π / 2

Let's replace

             x = 9 cos (π/2 t + φ)

As the system is released from the root x = x₀ for t = 0 s

              x₀ = x₀ cos φ

             Cos φ = 1

             φ = 0°

The final equation is

             x = 9 cos (pi / 2 t)

The correct answer is b

8 0
3 years ago
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