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sashaice [31]
3 years ago
8

Part D

Physics
1 answer:
Montano1993 [528]3 years ago
4 0

Answer:

80

Explanation:

I literally just did this question lol I hope I helped

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A chemical reaction occurs. Which of the following would indicate that energy is transformed during the reaction?
weqwewe [10]
The answer would be 4. All of the above

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3 years ago
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A spool whose inner core has a radius of 1.00 cm and whose end caps have a radius of 1.50 cm has a string tightly wound around t
White raven [17]

Answer:

v₁ = 37.5 cm / s

Explanation:

For this exercise we can use that angular and linear velocity are related

        v = w r

in the case of the spool the angular velocity for the whole system is constant,

They indicate the linear velocity v₀ = 25.0 cm / s for a radius of r₀ = 1.00 cm,

         w = v₀ /r₀

for the outside of the spool r₁ = 1.5 cm

         w = v₁ / r₁1

since the angular velocity is the same we set the two expressions equal

        \frac{v_o}{r_o} = \frac{v_1}{r_1}

        v1 = \frac{r_1}{r_o} \ \ v_o

let's calculate

       v₁ = \frac{1.50}{1.00} \ \ 25.0

       v₁ = 37.5 cm / s

4 0
3 years ago
What happenings when multiple forces act on an object
Dmitriy789 [7]

they are added vectorially. If htere is a resultant force, the thing acclerates. If they vectorially add to zero, thing doesn't move

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What are the two forces that keep a pendulum swinging?
Nezavi [6.7K]
The force of gravity is the only force that keeps a pendulum in motion. both the force increases the speed of the pendulum on the downswing and decreases it's speed on its upswing.
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Most of the earth,s surface is covered by what ?
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Around 70-72% of earth’s surface is covered in water (most of it is salt water).
Hope this helps.
4 0
3 years ago
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