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3 years ago

Reasons why using mirrors to generate electricity is not a common practice.

2 answers:

7 0

A big part of the reason that mirrors are seldom if ever used to generate
electricity is the simple fact that there is no way to generate electricity using
mirrors. They are as useless for the purpose as smoke is, although there are
those who have used both items simultaneously to create the impression that
they have succeeded in that attempt.

lesya692 [45]3 years ago

4 0

Mirrors are made of glass and glass isn't the greatest conductor.

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What best illustrates that light behaves like particles

Ira Lisetskai [31]

The light particle conceived by Einstein is called a photon. The main point of his light quantum theory is the idea that light's energy is related to its oscillation frequency. Einstein believed light is a particle (photon) and the flow of photons is a wave.

3 0

3 years ago

Read 2 more answers

claculate the pressure exerted by the water on the bottom of a deep dam of 12m from its surface .(density of water =1000kg/m sqa

Rudiy27

Explanation:

We know that,

$hydrostatic \: pressure (p) = \alpha hg$

Where,

$\alpha = density \: of \: water \: = 1000$

h = Height at which pressure is to be calculated

$p = 1000 \times 12 \times 9.8 = 117600 \:$

8 0

3 years ago

As an atom’s radius increases, 1. its ionization energy increases. 2. its ionizations energy increases or decreases depending on

Serhud [2]

Answer:

The correct option is: 4. its ionization energy decreases

Explanation:

Ionization energy refers to the energy required to pull a valence electron completely from the valence shell of a gaseous atom.

Now, in the periodic table of chemical elements, as we down a group, the atomic radius increases, so the effective nuclear charge experienced by the valence electron decreases. Therefore, the ionization energy decreases, down the group.

As we across a period, the atomic radius usually decreases, so the effective nuclear charge experienced by the valence electron increases. Therefore, usually the ionization energy increases, across the period.

Therefore, as the atomic radius increases, the effective nuclear charge experienced by the valence electron decreases and thus the ionization energy also decreases.

5 0

3 years ago

. Si mi mejor amigo vive a 100 metros de mi casa (una cuadra aproximadamente) y sabe qué cuando pongo una canción determinada es

Damm [24]

Answer:

Nuestro mejor amigo escuchará la música más rápido a una temperatura de 36 ºC (309.15 K)

Explanation:

Supongase que el aire se comporta como un gas ideal y que experimenta un proceso adiabático, entonces la velocidad del sonido ( $v$ ), medida en metros por segundo, queda traducida en la siguiente fórmula:

$v = \sqrt{\frac{\gamma \cdot R_{u}\cdot T}{M} }$ (1)

Donde:

$\gamma$ - Coeficiente de dilatación térmica, sin unidad.

$R_{u}$ - Coeficiente universal de los gases ideales, medido en kilogramo-metros cuadrados por mol-Kelvin-segundo cuadrado.

$T$ - Temperatura, medida en Kelvin.

$M$ - Masa molar, medida en kilogramos por mol.

Como se puede ver, la velocidad del sonido es directamente proporcional a la raíz cuadrada de la temperatura. Por tanto, nuestro mejor amigo escuchará la música más rápido a una temperatura de 36 ºC (309.15 K)

3 0

3 years ago

A bug is moving along a meter stick in the negative direction at a constant speed of 0.85cm/s. After 42 seconds have passed the

Agata [3.3K]

Given that,

bug speed, v= 0.85 m/s

time, t =42 s

Final position of bug on meter stick was 27 cm

Starting position of bug on meter stick = ?

Since we know that,

s = vt

s= 0.85*42 = 35.7 cm

this is the distance covered by bug in the given time and velocity.

since the bug is moving in negative direction, starting point will be:

27.0 cm+ 35.7 cm = 62.7 cm

The bugs starting position on meter stick was 62.7 cm.

3 0

4 years ago