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3 years ago

Which of the following substances can be separated into several elements?

Physics

2 answers:

NISA [10]3 years ago

7 0

ccccccccccccccccccccccccc

julia-pushkina [17]3 years ago

3 0

Answer: C

Explanation: Air

Hope this helps! Brainlist Plz?

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Why are slow twitch muscles more beneficiall than fast twitch mucles for cardiorespiratory fitness

Dmitriy789 [7]

Answer:

otherwise known as option D

Explanation:

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2 years ago

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What is it known as when a force is applied to an object for an amount of time?.

alina1380 [7]

You strong to do that

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2 years ago

You are working on an experiment involving a very strong permanent magnet, and your data suggests that your magnet's field sudde

kompoz [17]

<u>Question:</u>

You are working on an experiment involving a very strong permanent magnet, and your data suggests that your magnet's field suddenly decreased during some interval in time. Such a decrease could have been caused by the magnet

A. Having overheated substantially

B. Being hit hard

C. Both A and B

D. Being grounded out

<h3><u>Answer:</u></h3>

A decrease in magnetic field of the permanent magnet have been caused by the magnet having overheated substantially or sharp impacts by being hit hard.

Option c

<h3><u>Explanation: </u></h3>

Permanent magnets are ferromagnetic materials with its magnetic domains aligned and grouped together in the same direction. These atomic domains maintain their directionality and hence a permanent magnet provides persistently strong magnetic fields without quick weakening. Some factors may lead to demagnetization or else a consistent reduction in magnetic strength.

Overheating a magnetic material realigns the magnetic domain regions and affects its directionality. When it reaches to a temperature defined as Curie temperature, varying with each material; the substance is no more a magnet due to complete randomness in the domain structure. As the temperature decreases and approaches the room temperature, magnetic field appears but is less in strength. Sudden impacts due to hitting may lead to random realignment of magnetic domains and thus decrease its magnetic strength.

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3 years ago

un bus sale de florencia hacia el municipio de san vicente del caguan con una velocidad de 30km/h. 2 horas mas tarde sale otro b

goldenfox [79]

Recuerda que distancia=velocidad x tiempo ( $d=vt$ ). vamos a llamar $d _{1}$ a la distancia que reccore el primer bus, y $d _{2}$ la distancia que recoore el segundo. Los se econtraran cuando la ditancia recorrida por cada bus sea la misma, es decir $d _{1} =d _{2}$ .
Ahora sabemos que la velocidad del primer bus es 30 km/h y su tiempo es $t$ ; en cuanto al segundo bus, su velocidad es 45 km/h y como sale 2 horas mas tarde su tiempo será $t-2$ . Ahora podemos reemplazar los valores en nuestra ecuación de de distanica para hallar el tiempo:
$30t=45(t-2)$
$30t=45t-90$
$30t-45t=-90$
$-15t=-90$
$t= \frac{-90}{-15}$
$t=6$
Los buses se encontraran en 6 horas, 4 horas después de haber salido el segundo bus.

Ahora para hallar la distancia a la que los buses estaran de <span>san vicente del caguan solo necesitaremos reemplazar la el tiempo en nuestra equación de distancia para el primer bus:
</span> $d _{1} =(30)(6)$
$d _{1} =180$
<span>En el punto de encuentro los buses estarán a 180 km de San Vicente del Caguan.
</span>

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3 years ago

What are the differences between glaciers and geysers

liq [111]

A glacier is frozen and a geyser has boiling water coming from it. A glacier is usually still but it sometimes breaks and a geyser erupts. Also geysers are mostly rare and glaciers aren't.

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3 years ago