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3 years ago

The shape of an atom.is Spherical Square Pyramifal

Physics

2 answers:

zvonat [6]3 years ago

7 0

Spherical because it’s more like clouds

iVinArrow [24]3 years ago

4 0

The shape of an atom is spherical

Answer: spherical

<u>Explanation: </u>

In 1911, Rutherford proved with his experiment that the spread of positive, and negative particle inside the atom wasn't uniform. It was assumed to be uniform according to the atomic model given in 1904 by J.J. Thomson.

According to the latest atomic model, the atom has a dense nucleus made of neutrons and protons in the rest state whereas; the electrons revolve around the atomic nucleus in its respective orbital orientations.

The shape of an atom depends upon the electron's angular momentum and the electrostatic force between the atomic particles. Since the atoms don't have well defined spherical boundaries because of various orbital orientations around the nucleus, their shape cannot be stated as spherical.

However, only simple atoms exhibit spherical shape and not the complex ones.

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You and your friends are doing physics experiments on a frozen pond that serves as a frictionless, horizontal surface. Sam, with

Misha Larkins [42]

Answer:

Sam's and Abigail speeds before colliding were a. 12.34 m/s and b. 2.86 m/s, respectively. Their total kinetic energy was diminished by c. 1484.42 J, approximately

Explanation:

By conservation of momentum, we have

$\Delta \vec{p} = 0\\\\m\vec{v}_i = m\vec{v}_f\\m_S v_S\hat{i} + m_A v_A\hat{j} = m_S \times 7 \cos{(40)} \hat{i} + m_S \times 7 \sin{(40)} \hat{j} + m_A \times 9.4 \cos{(18)} \hat{i} - m_A \times 9.4 \sin{(18)} \hat{j}.$

Writing for each direction at a time,

$m_S v_S = 7m_S \cos{(40)} +9.4 m_A \cos{(18)}\\v_S = 7 \cos{(40)} + 9.4 \frac{m_A}{m_S} \cos{(18)} = 7 \cos{(40)} + 9.4\times\frac{57}{73} \cos{(18)} \approx \mathbf{12.34}\\m_A v_A = 7m_S\sin{(40)} - 9.4m_A\sin{(18)}\\v_A = 7\frac{m_S}{m_A}\sin{(40)} - 9.4\sin{(18)} = 7\times\frac{73}{57}\sin{(40)} - 9.4\sin{(18)} \approx \mathbf{2.86}.$

Their kinetic energy changed by

$K_f - K_i = \left( \frac{1}{2}m_s v_{fs}^2 + \frac{1}{2}m_a v_{fa}^2 \right) - \left( \frac{1}{2}m_s v_{is}^2 + \frac{1}{2}m_a v_{ia}^2 \right) = \left( \frac{1}{2}\times 73 \times 7^2 + \frac{1}{2}\times 57 \times 9.4^2 \right) - \left( \frac{1}{2}\times 73 \times 12.34^2 + \frac{1}{2}\times 57 \times 2.86^2 \right) \approx \mathbf{-1484.418 J}.$

3 0

3 years ago

23. Why would an astronomical unit not be<br> used to measure distances on Earth?

Rashid [163]

One Astronomical Unit is the distance between the Earth and the Sun, this acts as a sort of a cosmic metre stick. Astronomers don't and cannot measure distances. Distances are merely inferred from what actually has been measured, such as an angle, a relative luminosity, a time period

3 0

3 years ago

Identify the following items as scalar or vector.

Salsk061 [2.6K]

Answer:

Speed - scalar

Velocity - vector

Displacement - vector

Distance - scalar

Measurement - scalar

Measurement and direction - vector

60 m north - vector

100 m west - vector

200 m/s - scalar.

7 0

4 years ago

two coins lie 1.5 meters apart on a table. they carry identical electric charges. approximately how largeis the charge on each c

BARSIC [14]

The charge on each coin is equal to

Given the following data:

Force = 2.0 Newton

Radius = 1.5 meters

To determine the charge on each coin, we would apply the law of electrostatic forces:

Mathematically, the law of electrostatic forces is given by the formula:

Note: (since the coin carry identical electric charges).

Therefore, the formula becomes:

Making q the subject of formula, we have:

Substituting the given parameters into the formula, we have;

8 0

3 years ago

if the distance moved by the effort is greater than the distance moved by the load, the machine is speed multiplier. TRUE/FALSE

just olya [345]

Answer: TRUE

Explanation: I did it before

4 0

2 years ago