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3 years ago

When electrons are lost, a ion is formed. When electrons are gained, a ____ ion is formed.

Physics

2 answers:

xenn [34]3 years ago

6 0

Answer:

When electrons are lost, a positively charged ion is formed. When electrons are gained, a negatively charged ion is formed.

Explanation:

Atoms consist of three particles:

- Protons, positively charged, in the nucleus

- Neutrons, no charge, in the nucleus

- Electrons, negatively charged, orbiting around the nucleus

The proton and the electron have same magnitude of charge ( $e=1.6\cdot 10^{-19}C$ ), but the proton's charge is positive while the electron's charge is negative.

For a neutral atom, the number of protons is equal to the number of electrons, so the atom is electrically neutral. However, sometimes the atom can lose or gain electrons, becoming electrically charged: this is called ion. In particular:

- If the atom loses one (or more) electrons, it will remain with an excess of positive charge (because the number of protons is now greater than the number of electrons), so it will form a positively charged ion

- if the atom gains one (or more) electrons, it will remain with an excess of negative charge (because the number of protons is now smaller than the number of electrons), so it will form a negatively charged ion

choli [55]3 years ago

4 0

Answer:When electrons are lost, a positively charged ion is formed. When electrons are gained, a negatively charged ion is formed.

Explanation:

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Assume that segment r exerts a force of magnitude t on segment l. what is the magnitude flr of the force exerted on segment r by

mrs_skeptik [129]

If we are talking on the force being exerted by a segment of a rope of lenght R on the right on a point M which is being also pulled from the Left by a segment of rope R as shown in the figure attached. Then we invoke Newton's Third Law:
"Any force exerted by an object (in this case a segment of the rope) also suffers a equal and opposite force".
If we pick $T_R=T$ whis is the tension exerted by the right segment then the left segment will also exert an equal and opposite force so we have that $T_L=-T$

8 0

3 years ago

Un bombero alejado d = 31.0 m de un edificio en llamas dirige un chorro de agua desde una manguera contra incendios a nivel del

Mila [183]

Answer:

El chorro golpea el edificio a una altura de 15.943 metros con respecto al suelo.

Explanation:

El chorro de agua exhibe un movimiento parabólico, dado que este tiene una inclinación inicial y la única aceleración es debida a la gravitación terrestre. Las ecuaciones cinemáticas que modelan el fenómeno son:

Distancia horizontal (en metros)

$x = x_{o} + v_{o}\cdot t \cdot \cos \theta$

Donde:

$x_{o}$ - Posición horizontal inicial, medida en metros.

$t$ - Tiempo, medido en segundos.

$v_{o}$ - Velocidad inicial, medida en metros por segundo.

$\theta$ - Angulo de inclinación del chorro de agua, medido en grados sexagesimales.

Distancia vertical (en metros)

$y = y_{o} + v_{o}\cdot t \cdot \sin \theta + \frac{1}{2}\cdot g \cdot t^{2}$

Donde:

$y_{o}$ - Posición vertical inicial, medida en metros.

$g$ - Constante gravitacional, medida en metros por segundo al cuadrado.

Partiendo de la primera ecuación, se despeja el tiempo:

$t = \frac{x - x_{o}}{v_{o}\cdot \cos \theta}$

Si $x = 31\,m$ , $x_{o} = 0\,m$ , $v_{o} = 40\,\frac{m}{s}$ and $\theta = 33^{\circ}$ , entonces:

$t = \frac{31\,m-0\,m}{\left(40\,\frac{m}{s} \right)\cdot \cos 33^{\circ}}$

$t = 0.924\,s$

La altura máxima se calcula por sustitución directa de términos en la segunda ecuación. Si $y_{o} = 0\,m$ , $v_{o} = 40\,\frac{m}{s}$ , $t = 0.924\,s$ y $g = -9.807\,\frac{m}{s^{2}}$ , entonces:

$y = 0\,m + \left(40\,\frac{m}{s} \right)\cdot (0.924\,s)\cdot \sin 33^{\circ} + \frac{1}{2}\cdot \left(-9.807\,\frac{m}{s^{2}} \right) \cdot (0.924\,s)^{2}$

$y = 15.943\,m$

El chorro golpea el edificio a una altura de 15.943 metros con respecto al suelo.

3 0

3 years ago

Which of the following terms best describes a conceptual scheme in science that is strongly supported, has not yet been found in

Flauer [41]

Answer:

A) a scientific theory or principle

Explanation:

A Theory or principle has to explain different observations for a specific phenomenon. Theories are tested in base of new data to see if they can fit with all the new variations. They gain more acceptance in the scientific world if they predict in a correct way the result of many observations.

For example the uncertainty principle which state that the position and the momentum of a particle can not be known at the same time. Many experiments that aim to test the Uncertainty principle demonstrated this property, but tests are currently being done with other variations to see if the principle still fits with them.

3 0

4 years ago

Which of the following is a pure substance that can't be separated by physical means, and can't be decomposed into other substan

g100num [7]

Your answer is C. element

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3 years ago

Read 2 more answers

You are crouched at the "start" line. Bang! The race begins and 7 seconds later you end up 60 yards down the track. What was you

Nutka1998 [239]

Answer:

a = 7.35 ft / s²

Explanation:

For this exercise we must use the kinematics relations

x = v₀ t + ½ a t²

as the runner leaves the starting line his initial velocity is zero

x = ½ a t²

a = $\frac{2x}{t^2}$

let's reduce the distance to foot

x = 60 yd (3ft / 1yd) = 180 ft

let's calculate

a = 2 180 / 7²

a = 7.35 ft / s²

6 0

3 years ago

When electrons are lost, a ______ ion is formed. When electrons are gained, a __________ ion is formed.

When electrons are lost, a ion is formed. When electrons are gained, a ____ ion is formed.