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3 years ago

10

I NEED HELP ASAP

2 answers:

pogonyaev3 years ago

8 0

Answer:

Meteor, Streak of Light and it has not yet reached earths atmosphere.

Explanation:

A meteoroid is a celestial object which is very smaller than an asteroid. These objects are produced as a collision impact from mars or moon and float freely in space without any specific orbit. When they come inside the Earth's gravitational field, they are attracted by the Earth's gravity to Earth's crust. These objects in Earth's atmosphere are called meteors. As they travel through Earth's atmosphere, they do face a huge friction from Earth's atmosphere which let them burn and that is visible as the tail of the meteor.

Most of them are so small that they are burnt away in the atmosphere. But some are bigger and they reach the Earth's surface and are called as meteorites.

(not my words)

dimaraw [331]3 years ago

5 0

Answer:

Explanation:

Meteor because it reached earth's atmosphere

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Explanation:

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3 years ago

Why is potassium and sodium considered as reactive metals?

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Read 2 more answers

A spring with k = 19.5 N/cm is initially stretched 1.39 cm from its equilibrium length. a) How much more energy is needed to fur

lara31 [8.8K]

Answer:

Energy needed = 54.02 J

Explanation:

the Energy in an elastic spring from hookes law is given as

F= ke , therefore the energy (E) is

E = $\frac{1}{2} Ke^{2}$

K = 19.5 N/cm

e = 1.39cm

E = $\frac{1}{2}$ x 19.5 x 1.39

E = 13.55 J

The energy to stretch the spring for 6.93cm is

E = $\frac{1}{2}$ x 19.5 x 6.93

E = 67.57 J

The more energy needed for the further stretch is

67.57 - 13.55

Energy needed = 54.02 J

7 0

3 years ago