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Vika [28.1K]
3 years ago
12

A 5kg cart moving to the right with a velocity of 16 m/s collides with a concrete wall and

Physics
1 answer:
Kryger [21]3 years ago
8 0

Explanation:

mass, m = 5kg

initial velocity, u = 16m/s

final velocuty, v = -22m/s

change in momentum, ∆p = ?

∆p = m (v-u)

5(-22-16)

5(38)

∆p = 190kgm/s

check the calculations!

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Mkey [24]

Answer:

D = 4 g/cm³

Explanation:

Density = Mass / Volume

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4 0
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expeople1 [14]
Frequency represents the number of complete oscillations in one second. it is measured in Hertz (Hz). Electromagnetic waves are waves which do not require a material media for transmission. They travel with a speed of light.
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ruslelena [56]
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To balance the equation, the number of atoms of each element in the right side equation should be equal to left. By putting the numerical coefficient of 2, you will distribute that to each element. So you will end up with 2 nitrogen atoms and 2 oxygen atoms on the left side of the equation. Thus, the equation is balanced. 

The answer again, is B. 
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