3 years ago

Nitrogen has has an atom number of , which means that is has protons

2 answers:

7 0

Nitrogen's atomic number is 7, meaning that it has 7 protons since the atomic number represents the number of protons

Hope this helps

MArishka [77]3 years ago

4 0

The atomic number of nitrogen is 7, meaning it has 7 protons.

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a0.155 kg arrow is shot from ground level, upward at 31.4 m/s. what is its kinetic energy (ke) when it is 30.0 m above the groun

swat32

The kinetic energy (KE) of a 0.155 kg arrow that is shot from ground level, upward at 31.4 m/s, when it is 30.0 m above the ground is 30.85 J

Assuming air friction is negligible,

a = - 9.8 m / s²

u = 31.4 m / s

s = 30 m

v² = u² + 2 a s

v² = 31.4² + ( 2 * - 9.8 * 30 )

v² = 985.96 - 588

v² = 397.96 m / s

KE = 1 / 2 m v²

KE = 1 / 2 * 0.155 * 397.96

KE = 0.0775 * 397.96

KE = 30.85 J

Therefore, the kinetic energy ( KE ) when it is 30.0 m above the ground is 30.85 J

To know more about kinetic energy

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1 year ago

The acceleration due to gravity on Mars is 3.60 m/s2. if this is measured at a distance of 3.4 x 10^6 m from the center of the p

densk [106]

As we know that acceleration due to gravity is given by

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

here we know that

g = 3.60 m/s^2

M = ?

$r = 3.4 \times 10^6 m$

now we have

$3.60 m/s^2 = \frac{(6.67 \times 10^{-11} Nm^2/kg^2)(M)}{(3.4 \times 10^6)^2m^2}$

$M = 6.24 \times 10^{23} kg$

so above is the mass of Mars

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An object is in circular motion. How will the object behave if the centripetal force is removed

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The object will sail away in a straight line ... continuing in the same direction it was going when the centripetal force stopped.

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What date on the cosmic calendar did the milky way galaxy appear?

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Origin of life on Earth- September 25

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A trooper is moving due south along the freeway at a speed of 23 m/s. at time t = 0, a red car passes the trooper. the red car m

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The answer choice is 23

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