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galina1969 [7]
3 years ago
12

In a chemical reaction, which is the MOSTLY LIKELY reactant for these products? A:3O2 B:CO2 C: 2KCl D:CaCO3

Physics
2 answers:
sammy [17]3 years ago
7 0

The answer is A : 302 I really hope this helps!

fomenos3 years ago
5 0
The chemical reaction mostly likely reactant of those products is A: 302
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A compressed spring has elastic potential energy. Please select the best answer from the choices provided T F
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Answer: True

Explanation:

As the spring is compressed, it acumulates energy, and the spring "wants to release that energy". This acumulated energy, (potential energy) is called "elastic potential energy" because of the elastical nature of the spring, that when compressed it wants to return to the original shape. So the sentence is true

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_____ are placed on dangerous machinery to detect motion, light, heat, pressure, or another stimulus. Their presence helps prote
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Answer;

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A skateboarder rolls off a 2.5 m high bridge into the river. If the skateboarder was originally moving at 7.0 m/s, how much time
saul85 [17]

Answer:

  t = 0.714 s and  x = 5.0 m

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This is a projectile throwing exercise, in this case when the skater leaves the bridge he goes with horizontal speed

         vₓ = 7.0 m / s

Let's find the time it takes to get to the river

         y = y₀ + v_{oy} t - ½ g t²

the initial vertical speed is zero and when it reaches the river its height is zero

        0 = y₀ + 0 - ½ g t²

        t = \sqrt{\frac{2y_o}{g}  }

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the distance traveled is

       x = vₓ t

       x = 7.0 0.714

       x = 5.0 m

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3 years ago
A group of scientists have obtained some experimental results.
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