2 years ago

How does dna make a copy of itself?

1 answer:

3 0

DNA is duplicated when two strands od DNA molecule complementary base pairs, the nucleotide has enough information needed to duplicate or if its Asexual meaning one parent dna will duplicate itself through the cells while sexual meaning two parents are involved you need both parents DNA to duplicate by the nucleotide.

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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

ad-work [718]

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.

6 0

2 years ago

How would radiation occur in space?

Marizza181 [45]

Answer:

Space radiation is made up of three kinds of radiation: particles trapped in the Earth's magnetic field; particles shot into space during solar flares (solar particle events); and galactic cosmic rays, which are high-energy protons and heavy ions from outside our solar system.

Explanation:

3 0

2 years ago

Answer this question, please

pashok25 [27]

Answer:

the correct answer is the 60

$+ 20 + 60 \gamma \beta$