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Mandarinka [93]
3 years ago
11

Which of the following is the best evidence that Earth's continents were once in vastly different positions than they are today?

Physics
2 answers:
vredina [299]3 years ago
8 0

Answer:

B. Fossils of tropical plants are found in Antarctica.

Explanation:

That option is the best evidence from the given because it shows that once tropical plants and the continent that today is Antarctica were once together. There is no other form that plants could travel there.

It could have happened during the Permian Epoch when all the landmasses on Earth were together forming a supercontinent known as Pangea.

I hope this answer helps you.

4vir4ik [10]3 years ago
5 0
<span>B. Fossils of tropical plants are found in Antarctica </span>
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What physical properties does krypton have
antoniya [11.8K]

Answer:

Image result for what physical properties does krypton have

Krypton is a colorless, odorless gas. It has a boiling point of -152.9°C (-243.2°F) and a density of 3.64 grams per liter. That makes krypton about 2.8 times as dense as air.

Explanation:

8 0
2 years ago
Which acceleration does the force of earth’s gravity produce?
aev [14]

I think its A

hope this helps

5 0
3 years ago
The indices of refraction for violet light (λ = 400 nm) and red light (λ = 700 nm) in diamond are 2.46 and 2.41, respectively. A
JulijaS [17]

Answer:

0.42°

Explanation:

Using Snell's law of refraction which states that the ratio of the angle of sin of incidence to angle of sine of refraction is equal to a constant for a given pair of media. Mathematically,

Sin(i)/sin(r) = n

n is the refractive index of the medium

FOR VIOLET LIGHT:

n = 2.46

i = 51°

r = ?

To get r, we will use the Snell's law formula.

2.46 = sin51°/sinr

Sinr = sin51°/2.46

Sinr = 0.316

r = sin^-1(0.316)

rv = 18.42°

FOR RED LIGHT:

n = 2.41

i = 51°

r = ?

To get r, we will use the Snell's law formula.

2.41 = sin51°/sinr

Sinr = sin51°/2.41

Sinr = 0.323

r = sin^-1(0.323)

rd = 18.84°

The angular separation between these two colors of light in the refracted ray will be the difference between there angle of refraction.

Angular separation = rd - rv

= 18.84° - 18.42°

= 0.42°

6 0
3 years ago
What is the index of refraction of the glass?
Serggg [28]
You don't need to do any calculations, you are already given that n=1.5
n is index of refraction. it's 1.5
4 0
3 years ago
Julie is cycling at a speed of 3.4 meters/second. If the combined mass of the bicycle and Julie is 30 kilograms, what is the kin
nexus9112 [7]

Answer:

A

Explanation:

KE = 1/2 mv^2

=1/2(30kg)( 3.4 m/s)^2

=173.4 joules

=1.7×10^2 joules

6 0
3 years ago
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