All categories

4 years ago

What is the electron configuration of oxygen? 1s22s22p3 1s2, 2s6, 2p4, 3s2 1s2, 2s2, 2p4, 3s2 1s22s22p4

Physics

2 answers:

Shalnov [3]4 years ago

8 0

Answer:

(D) 1s22s22p4

Explanation: The last option is the correct answer !

vaieri [72.5K]4 years ago

7 0

oxygen's atomic number is 8

1s22s22p4 is the electron configuration

2+2=4 4+4=8

You might be interested in

The sun's radiation has different wavelengths. the shorter is the radiation's wavelength, the weaker is the radiation's energy.

NeX [460]

It is false. Because the amount of energy carried in the wave is inversely related to the length of the waves wavelength. To correct the statement it should be that the shorter the radiation's wavelength the stronger is the radiation's energy.

7 0

3 years ago

A softball player swings a bat, accelerating it from rest to 2.6 rev/srev/s in a time of 0.20 ss . Approximate the bat as a 0.90

svetoff [14.1K]

Answer:

$\tau=22.13Nm$

Explanation:

information we have:

mass: $m=0.9kg$

lenght: $L=0.95m$

frequency: $f=2.6rev/s$

time: $t=0.2s$

and from the information we have we can calculate the angular velocity $\omega$ . which is defined as

$\omega=2\pi f$

$\omega=2\pi (2.6rev/s)\\\omega=16.336 rev/s$

----------------------------

Now, to calculate the torque

We use the formula

$\tau=I \alpha$

where $I$ is the moment of inertia and $\alpha$ is the angular acceleration

moment of inertia of a uniform rod about the end of it:

$I=\frac{1}{3}mL^2$

substituting known values:

$I=\frac{1}{3} (0.9kg)(0.95m)^2\\I=0.271kg/m^2$

for the torque we also need the acceleration $\alpha$ which is defined as:

$\alpha=\frac{\omega}{t}$

susbtituting known values:

$\alpha=\frac{16.336rev/s}{0.2s} \\\alpha=81.68rev/s^2$

and finally we substitute $I$ and $\alpha$ into the torque equation $\tau=I \alpha$ : $\tau=(0.271kg/m^2)(81.68rev(s^2)\\\tau=22.13Nm$

5 0

4 years ago

In the ballistic pendulum experiment (A.K.A conservation of momentum & energy), the velocity of the projectile was measured

Fed [463]

Answer: The combined velocity = 0.413m/a

Maximum angle Ø = 54.7

Explanation: Please find the attached files for the solution

4 0

3 years ago

What is the difference between a scalar and vector quantity? Give an example of each

Mkey [24]

<span>Scalar quantity: one dimensional measurement of a quantity, like temperature, or mass. Vector: more than one number associated with it. Ex: Displacement, speed, velocity.</span>

5 0

3 years ago

A massless spring with force constant ????=200N/m hangs from the ceiling. A 2.0-kg block is attached to the free end of the spri

Makovka662 [10]

Answer:

-0.4454 Joules

Explanation:

m = Mass of block = 2 kg

h = Height of extension = 17 cm = x

g = Acceleration due to gravity = 9.81 m/s²

Potential energy of the spring

$P=mgh\\\Rightarrow P=2\times 9.81\times 0.17\\\Rightarrow P=3.3354\ J$

The kinetic energy of the spring

$K=\frac{1}{2}mx^2\\\Rightarrow K=\frac{1}{2}\times 200\times 0.17^2\\\Rightarrow K=2.89\ J$

In this system as the potential and kinetic energy is conserved from work energy equivalence we get

$W=P-K\\\Rightarrow W=2.89-3.3354\\\Rightarrow W=-0.4454\ J$

The work done by friction is -0.4454 Joules

8 0

3 years ago