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butalik [34]
4 years ago
12

If you hold a bar magnet in each hand and bring your hands together, will the force be attractive or repulsive if the magnets ar

e held:
a) with the two north poles together?
b) with a north pole and south pole together
Physics
1 answer:
NemiM [27]4 years ago
5 0

Answer:

<u><em>Part A:</em></u>

They will repel each other because same poles repel each other.

<u><em>Part B)</em></u>

They will attract each other because different poles attract each other..

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Genetic engineering, artificial selection and cloning are examples of biotechnology
scoundrel [369]

Answer:

3.) scientific field that uses technology to purposefully change living things

Explanation:

Science can be defined as a branch of intellectual and practical study which systematically observe a body of fact in relation to the structure and behavior of non-living and living organisms (animals, plants and humans) in the natural world through experiments. One of the most important branch of science is bioengineering. Biotechnology can be defined as a high-tech process which avail scientists the opportunity or ability to modify, remove, replace and insert Deoxyribonucleic Acid (DNA) sequence in a living organism such as bacterias, animals, plants etc in order to correct a genetic disorder and to improve on their physical and chemical conditions.

For example, selective breeding also referred to as artificial selection is being used to create plants that are more resistant to certain biological diseases. Thus, this is an example of an organism being changed through technological methods commonly known as biotechnology.

Hence, the phrase which best defines biotechnology is that, it is the scientific field that uses technology to purposefully change living things.

5 0
3 years ago
Using organisms such as fungi to detoxify a polluted area is called
Levart [38]

Answer:

bioremediation :)

Explanation:

7 0
3 years ago
Moon rocks resemble rocks from which of the following layers of the earth?
Vedmedyk [2.9K]
Mantle I think idrk cuz of erosion
7 0
3 years ago
Identical twins, Angela and Aisha, were both born with cystic fibrosis, a genetic disorder. As they grew older, Aisha was able t
ohaa [14]

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Their differences are most likely due to non shared environmental influences

4 0
3 years ago
a boy pulls 23 kg box with a 100 N force at 39 above a horizontal surface if the coefficient of kinetic friciton between the box
tatuchka [14]

Answer:

Total work done is 2606.08 J.

Explanation:

Given :

Mass of box , m = 23 kg .

Force applied , F = 100 N .

Angle from horizon , \theta=39^o.

Coefficient of kinetic friction , \mu=0.16.

Distance travelled by box , d = 34 m .

Now ,

Total work done = work done by boy + work done by friction.

W=Fdcos\theta+f_sdcos\theta=Fd-\mu(mg) \\\\W=100\times cos39^o\times 34-0.16\times 23 \times 9.8 \\\\W=77.71\times 34-36.06=2606.08\ J.

Hence , this is the required solution.

6 0
3 years ago
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