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kotykmax [81]
3 years ago
10

A 6,600 kg train car moving at +2.0 m/s bumps into and locks together with one of mass 5,400 kg moving at -3.0 m/s.

Physics
1 answer:
Katarina [22]3 years ago
5 0
Option B would be right one
according to momentum conservation
6600*2 = 13200kgm/s
5400*3 = 16200kgm/s
16200-13200 = 3000
now 6600-5400 = 1200 kg
thus 3000/1200 = 2.5 v
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What time period is the child with two angels from?
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Unpolarized light can undergo polarization by this means off a nonmetallic surfaces.
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Explanation:

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Answer:

 λ = 605.80 nm

Explanation:

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          d sin θ = m λ

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Let's use trigonometry to find the angle

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as the angles are very small

          tan θ = sin θ / cos θ = sin θ

we substitute

         sin θ = y / L

we substitute in the first equation

         d y / L = m λ          

          λ = d y / m L

let's calculate

           λ = 1.11 10⁻³ 4.71 10⁻²/ (10 8.63)

           λ = 6.05805 10⁻⁷ m

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8 0
3 years ago
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tangential acceleration is given as

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angle is given as

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\theta = tan^{-1}(\frac{7.27}{3.46})

\theta = 64.5 deg

5 0
3 years ago
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