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alekssr [168]
2 years ago
12

A substance that cannot be broken into simpler elements ia an

Physics
1 answer:
Anastaziya [24]2 years ago
3 0
Element. element cannot be simplerfide 
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How does the temperature of water affect the speed of the sound waves?
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Temperature is also a condition that affects the speed of sound. Heat, like sound, is a form of kinetic energy. Molecules at higher temperatures have more energy, thus they can vibrate faster. Since the molecules vibrate faster, sound waves can travel more quickly.

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A lamp is on a dimmer switch. As you turn the switch from the lowest setting to the highest setting, which statement would best
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D

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The moon and other satellites rotate around the earth. Identify the force that keeps these satellites in orbit. A) gravity B) fr
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A rotating object starts from rest at t = 0 s and has a constant angular acceleration. At a time of t = 2.5 s the object has an
Evgesh-ka [11]

Answer:

52 rad

Explanation:

Using

Ф = ω't +1/2αt²................... Equation 1

Where Ф = angular displacement of the object, t = time, ω' = initial angular velocity, α = angular acceleration.

Since the object states from rest, ω' = 0 rad/s.

Therefore,

Ф = 1/2αt²................ Equation 2

make α the subject of the equation

α = 2Ф/t².................. Equation 3

Given: Ф = 13 rad, t = 2.5 s

Substitute into equation 3

α = 2(13)/2.5²

α = 26/2.5

α = 4.16 rad/s².

using equation 2,

Ф = 1/2αt²

Given: t = 5 s, α = 4.16 rad/s²

Substitute into equation 2

Ф = 1/2(4.16)(5²)

Ф = 52 rad.

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2 years ago
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Which unit do astronomers use for angular measurement?
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