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NikAS [45]
3 years ago
10

8. Radioactive isotopes, differentiation of Earth’s iron core, gravity-driven compression,and meteoric bombardment all caused ea

rly Earth to ____________.A. glow brighter than the SunB. be much cooler than at presentC. be much hotter than at presentD. be much more oblong than at prese
Physics
1 answer:
Olegator [25]3 years ago
6 0

Answer:

option C

Explanation:

the correct answer is option C.

All the activity such as Radioactive isotopes, differentiation of Earth’s iron core, gravity-driven compression,and meteoric bombardment will make the earth hotter than what it is at present.

Radioactive isotope  whose nuclei are unstable dissipate excess energy.

Differentiation of iron core means formation of into layer which includes iron.

meteorite bombardment will affect the atmosphere of the earth which protect harmful radiation.

All these activity will make earth hotter

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A cat chase a mouse across a 1.0 m high table. The mouse steps out of the way, and the car slides off the table and strikes the
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The cat fell 1.0 m from the ground.

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5 0
3 years ago
A lens has a focal length of 0.1 m .Find the image distance when the object distance is
Black_prince [1.1K]

Answer:

A) 0.125 m  (the image is real)

B) -0.4 m (the image is virtual)

Explanation:

For both situations we will use the <u>Lens Equation</u>:

\frac{1}{f}=\frac{1}{v}+\frac{1}{u} (1)

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f=0.1 m is the focal length

u is the distance between the object and the lens

v is the distance between the image and the lens

Isolating v:

v=\frac{uf}{u-f}} (2)

Knowing this, let's begin with the answers:

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v=\frac{(0.08 m)(0.1 m)}{0.08 m-0.1 m}}

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6 0
3 years ago
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