4 years ago

As cell division begins, the chromatin are compacted into visible structures called?

Physics

1 answer:

andreev551 [17]4 years ago

3 0

The visible structures are called chromosomes, which is a visible part of duplicated DNA.

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2. A proton and an electron are sitting 0.5m away from each other. What is the

Brrunno [24]

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Explanation:

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3 years ago

Dan is gliding on his skateboard at 2.00 m/s . He suddenly jumps backward off the skateboard, kicking the skateboard forward at

miss Akunina [59]

Answer:

The velocity of Dan is 1.13 m/s.

Explanation:

Given that,

Initial velocity of skateboard and Dan = 2.00 m/s

Velocity of skateboard = 7.00 m/s

Mass of Dan m= 40.0 kg

Mass of skateboard M= 7.00 Kg

Suppose How fast is Dan going as his feet hit the ground?

We need to calculate the initial velocity of Dan

Using conservation of momentum

$(m+M)v_{i}=mv_{f}+Mv_{f}$

Put the value into the formula

$(40.0+7.00)\times2.00=40.0\times v_{i}+7.00\times7.00$

$v_{i}=\dfrac{(40.0+7.00)\times2.00-7.00\times7.00}{40.0}$

$v_{i}=1.13\ m/s$

Hence, The velocity of Dan is 1.13 m/s.

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3 years ago

If the building absorbed so much heat that it turned into a liquid, then it would have undergone a phase change known as _____.

docker41 [41]

The building is in solid phase. Its molecules are arranged in a ver compact manner that is why it takes a definite shape and volume. When it is heated, the kinetic energy of the molecules increases. This is characterized by more frequent collisions. The rise in temperature causes the molecules to move rapidly by vibrating. When it reaches an amount of energy that causes the solid to change phase, this is called the latent energy. The molecules break their form and move farther away from each other until it resembles that of a liquid melting. This phase change is known as melting. The energy that must be reached to achieve melting is the latent heat of fusion.

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3 years ago

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Dmitriy789 [7]

Answer:

20 km

Explanation:

20 km

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3 years ago

Please help me answer these questions.

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3 years ago