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Oliga [24]
3 years ago
13

Isotopes of the same element vary in the number of ____ present in the nucleus A.neutrons

Physics
2 answers:
I am Lyosha [343]3 years ago
5 0
A. Neutrons.
If it were electrons, it would be an ion.
If it were protons, it wouldn't be the same element.
Vinil7 [7]3 years ago
5 0
Hey there!

<span>Isotopes of the same element vary in the number of ____ present in the nucleus
Your answer is A. neutrons.

Hope this helps!
Have a great day! (:
</span>
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B the goose with most mass
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When electric current is flowing in a metal, the electrons are movinga. at nearly the speed of light.b. at the speed of sound in
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Option (d)

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What happens to the frequency and pitch of sound if the object making the sound moves away from you ?
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If you and the source of sound are moving apart, then the pitch (frequency) <em>you hear</em> is <em>lower</em> than the pitch (frequency) that's actually leaving the source.  

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A 23 g bullet traveling at 230 m/s penetrates a 2.0 kg block of wood and emerges cleanly at 170 m/s. If the block is stationary
Ann [662]

The distance traveled by the wood after the bullet emerges is 0.16 m.

The given parameters;

  • <em>mass of the bullet, m = 23 g = 0.023 g</em>
  • <em>speed of the bullet, u = 230 m/s</em>
  • <em>mass of the wood, m = 2 kg</em>
  • <em>final speed of the bullet, v = 170 m/s</em>
  • <em>coefficient of friction, μ = 0.15</em>

The final velocity of the wood after the bullet hits is calculated as follows;

m_1u_1 + m_2 u_2 = m_1v_1 + m_2v_2\\\\0.023(230) + 2(0) = 0.023(170) + 2v_2\\\\5.29 = 3.91 + 2v_2\\\\2v_2 = 1.38\\\\v_2 = \frac{1.38}{2} = 0.69 \ m/s

The acceleration of the wood is calculated as follows;

\mu = \frac{a}{g} \\\\a = \mu g\\\\a = 0.15 \times 9.8\\\\a = 1.47 \ m/s^2

The distance traveled by the wood after the bullet emerges is calculated as follows;

v^2 = v_0^2 + 2as\\\\v^2 = 0 + 2as\\\\v^2 = 2as\\\\s = \frac{v^2}{2a} \\\\s = \frac{(0.69)^2}{2(1.47)} \\\\s = 0.16 \ m

Thus, the distance traveled by the wood after the bullet emerges is 0.16 m.

Learn more here:brainly.com/question/15244782

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