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Solnce55 [7]
3 years ago
12

Basaltic igneous rocks are ____. a. light-colored c. rich in iron and magnesium b. lower in density than granitic rocks d. both

a and b
Physics
2 answers:
Katyanochek1 [597]3 years ago
7 0

rich in iron and magnesium

Rina8888 [55]3 years ago
5 0

Answer: c. rich in iron and magnesium

Explanation:

Basalt is an extrusive igneous rock that develops by the rapid cooling of the lava erupted after the volcanic eruption. This lava possibly consists of magnesium and iron which gets exposed to the terrestrial land. It is estimated that more than 90% of the rocks on the planet earth are basalt.

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Discuss how a photon (aka the light particle) can be affected by gravity despite being massless.
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Explanation:

Light is clearly affected by gravity, just think about a black hole, but light supposedly has no mass and gravity only affects objects with mass. On the other hand, if light does have mass then doesn't mass become infinitely larger the closer to the speed of light an object travels.

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1-¿Que tipo de energía usa en su hogar para el alumbrado , la calefacción y artículos de entretenían, entre otros ? 2-¿ de que m
Harman [31]

Answer:

Explanation:

1.-Energía eléctrica ( electricidad ) proveniente de una fuente AC ( es decir de corriente alterna)

2.-Hay un proveedor de servicios que lleva la energía a las comunidades en general y en particular la lleva hasta mi casa y escuela. Se define como acometida eléctrica, la infraestructura que lleva la energía desde la red de distribución al tablero principal en el abonado. La acometida puede ser aérea o subterránea, y normalmente consta de tres conductores ( de los cuales dos son calibre AWG # 8 ( dos fases ) y uno AWG # 10 ( neutro ). Esta configuración permite tener: 120 y 240 (V) en servicio en la casa y suficiente capacidad para la carga eléctrica de una casa normal

3.-Si, el tipo de corriente. En el caso de una linterna se usan "pilas" o baterías de corriente directa ( que no varia en el tiempo), en la casa la corriente es alterna de 60 ciclos por segundo de frecuencia.

4.-Si el voltaje es menor en una medida importante la ampolleta no alumbra por cuanto si por ejemplo el voltaje nominal ( o de funcionamiento es 120 V y el voltaje suministrado es 50 V ese voltaje será insuficiente para hacer funcionar el circuito). Si el voltaje es mayor dígamos 240 V la ampolleta se quema.

5.-El interruptor nos asegura la maniobra a nuestra voluntad del circuito del cual forma parte. Es decir si tengo un circuito de alumbrado ( 1 bombillo y un interruptor ) ese interruptor me permitirá apagar y encender la luz cuando yo quiera.

Los breaker son "interruptores" son dispositivos de protección para caso de sobrecargas y/o cortocircuitos

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3 years ago
Explain how we use a spectrometer to help us determine what stars and planets are made of?
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Air is warmed and moisten as it moves through both the mouth and nasal passages.
Alexxx [7]

Well, in my own personal case, I can actually move the air in either
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3 0
3 years ago
Read 2 more answers
A 15.0 g bullet is moving to the right with speed 270 m/s when it hits a target and travels an additional 25.0 cm into the targe
Fantom [35]

Answer:

F=2187\ N

Explanation:

Given:

  • mass of bullet,m=15\ g=0.015\ kg
  • initial velocity of bullet, u=270\ m.s^{-1}
  • displacement of the bullet in the target, s=25\ cm=0.25\ m

Here as given in the question the bullet penetrates the target by the given displacement of the bullet into it. During this process it faces deceleration and hence it comes to rest.

  • so, final velocity of the bullet, v=0\ m.s^{-1}

Now using the equation of motion:

v^2=u^2+2a.s

where:

a= acceleration of the bullet

0^2=270^2+2a\times 0.25

a=145800\ m.s^{-2}

<u>Now the force of resistance offered by the target in stopping it:</u>

F=m.a

F=0.015\times145800

F=2187\ N

5 0
3 years ago
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