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Sever21 [200]
3 years ago
7

Models of four atoms are shown as figures A, B, C, and D. Which two atoms represent isotopes of the same element?

Physics
1 answer:
timurjin [86]3 years ago
3 0
C and d have the same amount of protons and electrons
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2. An athlete of average size is hanging from the end of a 20 m long rope, which has a mass of 4 kg and is attached to a hook in
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Answer:

  t = 0.319 s

Explanation:

With the sudden movement of the athlete a pulse is formed that takes time to move along the rope, the speed of the rope is given by

             v = √T/λ

Linear density is

           λ = m / L

           λ = 4/20

           λ = 0.2 kg / m

The tension in the rope is equal to the athlete's weight, suppose it has a mass of m = 80 kg

           T = W = mg

           T = 80 9.8

           T = 784 N

The pulse rate is

          v = √(784 / 0.2)

          v = 62.6 m / s

The time it takes to reach the hook can be searched with kinematics

          v = x / t

          t = x / v

          t = 20 / 62.6

          t = 0.319 s

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The liquid contained in batteries that conducts electric charge is called the: solution, electrolyte, suspension, colloid
blondinia [14]

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The liquid contained in batteries that conducts electric charge is called the. electrolyte.

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The tension in the horizontal towrope pulling a water-skier is 250 N while the skier moves due west a distance of 50 m. How much
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Explanation:

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Two similar sized stones one heavy and one light dropped from the same height into a pond explain why the impact of the heavy st
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In energy point of view, the larger stone had more potential energy before dropping. impacting the water, the larger one, having more kinetic energy which changed from potential energy, tranfered energy to the water and formed wave. the amplitude of the wave indicate the energy of the wave. more energy more amplitude.
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Why does the weather change during an eclipse? help me
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Answer:

here`s your answer

Winds often slow down during an eclipse as the atmosphere temporarily settles. Heating causes the atmosphere to mix and bubble, just like a pot of water on the stove. As it warms, the water level in the pot rises because warm objects, including water, expand. In the case of the atmosphere, it also expands when heated.

Explanation:

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