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Inessa [10]
3 years ago
15

She knows that a magnesium ion has an electric field that pints away from the ion. What values should she use to complete her ta

ble
Physics
1 answer:
ohaa [14]3 years ago
8 0

Answer:

B.X: 12 Y: 12 Z: 10

Explanation:

Ions are formed when an atom of an element that lacks stable configuration or octet configuration, looses or gains electrons to attain stability.

Magnesium atom contains 12 electrons, with an electron configuration of 2:8:2. Therefore, it requires to loose two electrons to attain stability, thus forming an ion. During ion formation, the number of protons and neutrons are not affected thus they do not change.

Therefore; Magnesium atom contain 12 electrons, 12 protons and 12 Neutrons. While magnesium atom contains 12 protons, 10 electrons, and 12 neutrons.

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Why are there zero hours of daylight at the north pole and south pole in the winter
raketka [301]

Answer:

The seasons are caused by the tilt of Earth's axis in relation to the sun. ... During summer, Antarctica is on the side of Earth tilted toward the sun and is in constant sunlight. In the winter, Antarctica is on the side of Earth tilted away from the sun, causing the continent to be dark.

Explanation:

4 0
3 years ago
A cheetah can run at a maximum speed 97.8 km/h and a gazelle can run at a maximum speed of 78.2 km/h. If both animals are runnin
emmainna [20.7K]

(1)

Cheetah speed: v_c = 97.8 km/h=27.2 m/s

Its position at time t is given by

S_c (t)= v_c t (1)

Gazelle speed: v_g = 78.2 km/h=21.7 m/s

the gazelle starts S0=96.8 m ahead, therefore its position at time t is given by

S_g(t)=S_0 +v_g t (2)

The cheetah reaches the gazelle when S_c=S_g. Therefore, equalizing (1) and (2) and solving for t, we find the time the cheetah needs to catch the gazelle:

v_c t=S_0 + v_g t

(v_c -v_g t)=S_0

t=\frac{S_0}{v_c-v_t}=\frac{96.8 m}{27.2 m/s-21.7 m/s}=17.6 s


(2) To solve the problem, we have to calculate the distance that the two animals can cover in t=7.5 s.

Cheetah: S_c = v_c t =(27.2 m/s)(7.5 s)=204 m

Gazelle: S_g = v_g t =(21.7 m/s)(7.5 s)=162.8 m

So, the gazelle should be ahead of the cheetah of at least

d=S_c -S_g =204 m-162.8 m=41.2 m

4 0
3 years ago
Read 2 more answers
What are the laws of Physics​
uranmaximum [27]

Answer:

thermodynamics

Explanation:

The laws of thermodynamics define a group of physical quantities, such as temperature, energy, and entropy, that characterize thermodynamic systems in thermodynamic equilibrium.

8 0
3 years ago
Heating gas to create plasma can yield A) neutrons. B) elements. C) molecules. D) free electrons.
Romashka [77]
<h2>Answer: free electrons</h2>

<u>Plasma</u> is known as the 4th state of matter and is itself ionized gas. In this sense, ionization consists of the production of ions, which are <u>electrically charged atoms or molecules due to</u><u> the excess or lack of electrons</u><u> with respect to a neutral atom or molecule. </u>

That is why in this process there are always<u> free electrons</u>. Therefore in heating gas to create plasma can yield  free electrons, and the correct option is D.

8 0
3 years ago
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Which best describes the transition from gas to liquid? (2 points) Select one: a. Energy must be removed because particles in li
Alenkinab [10]

Which best describes the transition from gas to liquid?

gas is @ higher energy state than liq. so the transition must remove energy. so ans is  a. Energy must be removed because particles in liquid move more slowly.

8 0
3 years ago
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