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3 years ago

Explain why it is not possible to change hereditary conditions.

1 answer:

5 0

Answer and Explanation: Before answering your question, let me explain to you what actually heredity is. Newborn babies inherit some traits from their parents both from mother and father in form of chromosomes, which is present in the nucleus of human cell. Human has 46 chromosomes in total in form of 23 pairs. When a baby is made he get 23 chromosomes from each parents thus, inheriting their traits through chromosomes. These traits lie on the surface of chromosomes as a functional unit called Genes. It is made up of DNA which we referred to as the genetic material of human being. Now, you can see how complicated this loop is and this loop is part of each and every cell of your body and you have millions and trillions of cell in your body,because you cannot get rid of your DNA which means cannot take out the heredity from within your body. You always get the traits you receive from your parents and you cannot change those traits. Hereditary conditions include some of genetic diseases we receive either from our parents through chromosomes or those diseases are caused because of mutation of genes which is kind of problem in your genes. Because you cannot replace all this system, thus you cannot take out hereditary condition out of your body.

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The speed of the pendulum at point 3 is 1.4 m/s

Explanation:

We can solve this problem by using the law of conservation of energy. In fact, the mechanical energy of the pendulum (which is the sum of his potential energy + his kinetic energy) must be conserved. So we can write:

$U_1 +K_1 = U_3 + K_3$

where

$U_1$ is the initial potential energy, at the highest position

$K_1$ is the initial kinetic energy, at the highest position

$U_3$ is the final potential energy, at the lowest position

$K_3$ is the final kinetic energy, at the lowest position

We are told that:

$U_1 = 10 J$ is the potential energy of the pendulum at the maximum height

$K_1 = 0$ (when the pendulum is at maximum height, the speed is zero, so the kinetic energy is zero)

$U_3 = 0$ (potential energy is zero at the lowest position)

Therefore,

$K_3 = U_1 = 10 J$

Kinetic energy can be rewritten as

$K_3 = \frac{1}{2}mv^2$

where

m = 10 kg is the mass of the pendulum

v is its speed at point 3

Solving for v,

$v=\sqrt{\frac{2K_3}{m}}=\sqrt{\frac{2(10)}{10}}=1.4 m/s$

Learn more about kinetic energy:

brainly.com/question/6536722

#LearnwithBrainly

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