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Kitty [74]
3 years ago
10

Which statement about atomic structure is incorrect? A) Protons are located in the nucleus. B) Protons and electrons have the sa

me mass. C) Protons and electrons have opposite charges. D) Neutral atoms contain the same number of protons and electrons.
Physics
1 answer:
d1i1m1o1n [39]3 years ago
8 0

Answer:

b is the answer

Explain:

i took it trust

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A body A of mass 1.5kg, travelling along the positive x-axis with speed 4.5m/s, collides with another body B of mass 3.2kg which
Veronika [31]
We consider the momentum in the x-direction and apply the principle of conservation of momentum to form the equation:
m(A)u(A) = m(A)v(A) + m(B)v(B), since u(B) = 0 as B is at rest

We calculate v(A) using:
Vx = Vcos∅
Vx = 2.1cos(30)
Vx = 1.82 m/s

1.5 x 4.5 = 1.5 x 1.82 + 3.2v(B)
v(B) = 1.26 m/s

The deflection angle of B will be 30° above the positive x-axis, so:
v(B) = Vcos∅
V = 1.26 / cos(30)
V = 1.45 m/s

The velocity of B is 1.45 m/s
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4 years ago
In a position time graph, a curved line represents: acceleration no movement constant velocity
Mumz [18]

Answer:

acceleration or a deceleration

Explanation:

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a straight line indicate a constant velocity (gradient ≠ 0)

when it is a parallel line to the time axis , it indicated no movement

when it is a curved line it indicates a changing velocity (either acceleration or a deceleration) as mentioned in the graph

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Your answer is C. element

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