Hello there.
<span>Which of the following would be an example of positive eugenics?
</span><span>A. Performing DNA research to eliminate breast cancer
</span>
Answer:
40 000 units of momentum
Explanation:
Assuming that the mass is doubled and the velocity stays constant the new momentum will be doubled the original momentum.
The patterns that can be looked for when studying science topic include the use of data or carrying out an experiment.
<h3>How to illustrate the information?</h3>
It should be noted that patterns are regular and intelligible forms or sequences that can be found in nature. Based on the information, scientific questions may be generated when scientists want to observe a pattern of events.
It should be noted that when scientists want to observe a pattern of events or
when something does not match an established pattern, scientists can use patterns to classify objects or phenomena into groups.
Therefore, the patterns that can be looked for when studying science topic include the use of data or carrying out an experiment.
Learn more about patterns on:
brainly.com/question/968894
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"b. The nucleus is made of
protons and neutrons and has a positive charge" is the only option that is true about the atomic nucleus. The protons give it a positive charge.
Answer:
2.068 x 10^6 m / s
Explanation:
radius, r = 5.92 x 10^-11 m
mass of electron, m = 9.1 x 10^-31 kg
charge of electron, q = 1.6 x 10^-19 C
As the electron is revolving in a circular path, it experiences a centripetal force which is balanced by the electrostatic force between the electron and the nucleus.
centripetal force = 
Electrostatic force = 
where, k be the Coulombic constant, k = 9 x 10^9 Nm^2 / C^2
So, balancing both the forces we get
v = 2.068 x 10^6 m / s
Thus, the speed of the electron is give by 2.068 x 10^6 m / s.
