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KiRa [710]
3 years ago
6

I need help fast thanks

Biology
1 answer:
kari74 [83]3 years ago
4 0
I think it’s C I’m not 100% sure tho
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How far away can a proton and an electron be from each other, such that they still exert an electric force on each other of magn
pogonyaev

Answer:

\sqrt{ \frac{2.3 *10^{-28}     }{F} }

Explanation:

Total force = Force due to gravity + Force due to charges

Total force = \frac{GMm}{r^{2} } + \frac{kQq}{r^{2} }

r is the separation between particles.

Charge of a proton(Q) = - (charge of an electron(q) ) = 1.6 * 10^-19 coulombs

Mass of a proton (M)= 1.67×10^-27 kilograms

Mass of an electron (m) =9.11 × 10^-31 kilograms

G=6.67 ×10^−11 N⋅m^2/kg^2

k=8.99 * 10 ^9 N.m^2 / C^2

Plugging in values:

Force due to gravity= (6.67 *10^−11)(1.67 * 10^-27)*(9.11 * 10^-31) /r^2 =1.01 * 10^-67   /  r^2

Force due to charges : (8.99 * 10 ^9)*(1.6 * 10^-19)*(1.6 * 10^-19) / r^2 = 2.3 *10^-28    /  r^2

We can observe that force due to charges is too large as compared with force due to charge. The ratio of Fc to Fm is 2.3* 10^39. It means that we can ignore force due to gravity.

Total force = Force due to charges.

F = 2.3 *10^-28    /  r^2

r = \sqrt{ \frac{2.3 *10^{-28}     }{F} }

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4 years ago
Why did we make sure to include a start and stop dna sequences for the jellyfish?
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We did  make sure to include a start and stop dna sequences for the jellyfish so that  the Glo gene would be transcribed and expressed and so we can see that we have successfully transformed the cells into which we place the engineered <span>plasmid.</span>
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What is the largest source of waste generation?
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Answer:        B. Individuals and agriculture

Explanation:

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Elephants are not the most common species in African grasslands. The grasslands contain scattered woody plants, but they are kep
lapo4ka [179]

Answer:

The elephants are the keystone species in this ecosystem.

Explanation:

The elephants' job is to knock down trees from time to time to get food from tall stock. This prevents the trees from overpopulating and allows shrub lands to stay in place. This is important as herbivores can continue to graze in large herds and carnivores can continue using the same hunting strategies with little to no push backs by trees.

This makes to elephants a keystone species as without them, the foundation species will decrease in population and create a whole different ecosystem with the trees as the new foundation species.

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3 years ago
An experiment is replicable if different scientists can do the experiment and get the same results. True or False?
Nadya [2.5K]

Answer:

True

Explanation:

Because they can do the same ting and get the same result. Thus its replicable

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