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3 years ago

Rocks from volcanoes are used by scientists to study the interior of the earthTRUE OR FALSE

2 answers:

7 0

True, rocks are made from hardened magma from the Earth’s interior. By studying them you can find out a lot about the interior.

I had a carved lava rock necklace when I was a kid & lived in Hawaii. My sister & I developed a rash from wearing the lava rock pendant. We think it was because there was a high level of sulfur in the lava rock.

If you have ever been near an active volcano, the smoke/ steam gives off a smell of sulfur, which smells like rotten

cupoosta [38]3 years ago

6 0

I think it’s false bc A volcano is not in the interior of the earth

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A proton is placed in an electric field of intensity 700 N/C. What are the magnitude and direction of the acceleration of this p

olya-2409 [2.1K]

Answer:

Acceleration of proton will be $a=0.67\times 10^{11}m/sec^2$

Explanation:

We have given a proton is placed in an electric field of intensity of 700 N/C

So electric field E = 700 N/C

Mass of proton $m=1.67\times 10^{-27}kg$

Charge on proton $e=1.6\times 10^{-19}C$

So electric force on the proton $F=qE=1.6\times 10^{-19}\times 700=1.120\times 10^{-16}N$

This force will be equal to force due to acceleration of the proton

According to newton's law force is given by F = ma

So $1.67\times 10^{-27}\times a=1.120\times 10^{-16}$

$a=0.67\times 10^{11}m/sec^2$

So acceleration of proton will be $a=0.67\times 10^{11}m/sec^2$

6 0

3 years ago

Electrons carry energy from a battery to a lightbulb.

riadik2000 [5.3K]

The correct answer among all the other choices is "None of the above." <span>Electrons carry energy from a battery to a light bulb. The electron's potential energy will be converted into light energy. </span>Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.

5 0

3 years ago

Read 2 more answers

(a) Calculate the magnitude of the gravitational force exerted on a 497-kg satellite that is a distance of 1.92 earth radii from

Setler [38]

Answer:

a) 1321.45 N

b) 1321.45 N

c) 2.66 m/s^2

d) 2.21*10^-22 m/s^2

Explanation:

Hello!

First of all, we need to remember the gravitational law:

$F = G \frac{m_1 m_2}{r^2}$

Were

G = 6.67428*10^-11 N(m/kg)^2

m1 and m2 are the masses of the objects

r is the distance between the objects.

In the present case

m1 = earth's mass = 5.9742*10^24 kg

m2 = 497 kg

r = 1.92 earth radii = 1.92 * (6378140 m) = 1.2246*10^7 m

Replacing all these values on the gravitational law, we get:

F = 1321.45 N

a) and b)

Both bodies will feel a force with the same magnitude 1321.45 N but directed in opposite directions.

The acceleration can be calculated dividing the force by the mass of the object

a_satellite = F/m_satellite = ( 1321.45 N)/(497 kg)

a_satellite = 2.66 m/s^2

a_earth = F/earth's mass = (1321.45 N)/( 5.9742*10^24 kg)

a_earth = 2.21*10^-22 m/s^2

8 0

3 years ago

Climate is the pattern of ________________ in an area over the years.

pav-90 [236]

Answer:

Weather conditions

Explanation:

8 0

3 years ago

Read 2 more answers

If a person perceives that he has some control over his environment, he most likely will handle stress:

Ray Of Light [21]

The answer would be D

8 0

3 years ago

Rocks from volcanoes are used by scientists to study the interior of the earthTRUE OR FALSE​

Rocks from volcanoes are used by scientists to study the interior of the earthTRUE OR FALSE