2 years ago

The universe consists of many galaxies. Which choice correctly identifies our home galaxy and its type?

Physics

1 answer:

White raven [17]2 years ago

8 0

Answer:

Explanation:

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3 years ago

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1. Two blocks travel along a level frictionless surface. Block A is initially moving to the right at 5.0 m/s, while block B is i

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Answer: 2.67 m/s

Explanation:

Given

Mass of block A is $m_a=2\ kg$

mass of block B is $m_b=3\ kg$

The initial velocity of block A $u_a=5\ m/s$

the initial velocity of block B is $u_b=0$

After collision velocity of block A is $v_a=1\ m/s$

Conserving momentum

$m_au_a+m_bu_b=m_av_a+m_bv_b\\\\2\times 5+3\times0=2\times 1+3\times v_b\\\\v_b=\dfrac{8}{3}=2.67\ m/s$

The momentum of block A after the collision is $P_a=2\times 1=2\ kg.m/s$

Therefore, there is no change in sign.

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2 years ago

Four examples of compounds which are classed as carbohydrate

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Answer:

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3 years ago

Two point charges are arranged in a line with point P, which is on the right. The

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Answer:

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2 years ago

Consider a horizontal layer of the dam wall of thickness dx located a distance x above the reservoir floor. what is the magnitud

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3 years ago

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