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3 years ago

The atomic number of nitrogen is 7. The number of electrons a neutral nitrogen atom has is

Biology

1 answer:

Nana76 [90]3 years ago

3 0

Answer:

7 Electrons

Explanation:

The number of electrons in a neutral atom is directly proportional to the atomic number therefore because nitrogen has an atomic number of 7, then electrons are found in the orbitals.

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A planet has a mass of 5.97 x 1024 kg and a radius of 6.38 x 106 m. Find the weight of a 65.0 kg person at 1000 km above the sur

mote1985 [20]

Answer: The weight of the person above the surface of a planet is 635.83N.

Explanation:

To calculate the weight of a person, we use the formula:

$w=mg$ ....(1)

where,

w = weight of an object

m = mass of the person = 65kg

g = acceleration due to the gravity of the planet

For the calculation of weight, we need to first find the acceleration due to gravity and for that we use the formula:

$g=\frac{GM}{r^2}$

where, g = acceleration due to gravity = $?m/s^2$

G = Universal gravitational constant = $6.67\times 10^{-11}Nm^2/kg^2$

M = mass of the planet = $5.97\times 10^{24}kg$

r = distance of the person from the planet = $6.38\times 10^6m$

Putting values in above equation, we get:

$g=\frac{(6.67\times 10^{-11}kgm/s^2.m^2/kg^2)(5.97\times 10^{24}kg)}{(6.38\times 10^6m)^2}\\\\g=9.782m/s^2$

Putting this value in equation 1, we get:

$w=65kg\times 9.782m/s^2=635.83N$

Hence, the weight of the person above the surface of a planet is 635.83N.

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2 years ago

Which of the following represents a duplication in the DNA sequence A-G-T-C-T?

dimulka [17.4K]

Answer:

wym i canr see the examples

Explanation:

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3 years ago

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Which statement describe the sun? check all that apply

matrenka [14]

Answer:

What are the statements? can we have a picture? :-)

Explanation:

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3 years ago

Which time period saw the loss of 96% of all marine species and 70% of all terrestrial species?

kolbaska11 [484]

Answer: the Permian–Triassic extinction event ; {"end of the Permian era"} .
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3 years ago

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Why is cloning a form of asexual reproduction

Deffense [45]

Because in asexual reproduction, only one parent is needed; unlike sexual reproduction that takes a male and female mating to produce offspring.
Cloning comes from a single parent that has not mated; the offspring will have the exact same DNA as the parent.

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3 years ago