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3 years ago

Which is the best evidence that continents that are now separated were once

2 answers:

7 0

B. For example Africa and South America have the same animals and fossils. They have a lot of things that can only be found in those 2 continents

Rasek [7]3 years ago

3 0

I’d say It’s B since the plants and fossils are big indicators

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Which statement best describes the difference between strong nuclear forces and weak nuclear forces?

aleksandrvk [35]

The list of statements you included has no good descriptions at all.

7 0

3 years ago

You are designing a new piece of fishing equipment that will allow you to catch a fish from the surface. You know that water ref

OleMash [197]

Answer:

Law of refraction

Explanation:

An experiment to analyze the refraction of light in water can easily be performed with a laser pointer and protractor.

We throw the fishing rod line into the water, place the protractor at the point where the line touches the water and use the direction of the line for the direction of the laser pointer (on), the laser is visible by the reflection on the particles in the air.

The vertical line is called Normal and all angles must be measured with respect to this reference in optics.

Having these angles and the refractive index of water we can use the law of refraction

n₁ sin θ₁ = n₂ sin θ₂

θ₂ = $sin^{-1} ( \frac{n_1}{n_2} \ sin \ \theta_1 )$

we can repeat several times to analyze several different input points (different angles) and to decrease the errors in the measurements.

the refractive index of air is n1 = 1 and n2= 1.33 (water)

4 0

3 years ago

Which element is most likely to have an oxidation number of +3?

Marina86 [1]

Answer:

A different answer to this is AI

Explanation:

4 0

3 years ago

What mechanism of energy is transferred by mass motion of fluid from one region of space to another?

lora16 [44]

Convection, because it is the process of heat transfer from one location to the next by the movement of fluids. The moving fluid carries energy within it.

5 0

3 years ago

A 1,155 kg truck has a velocity of 18 m/s. What is the momentum of the truck?

77julia77 [94]

The momentum of truck is 20790 kg m/s

Solution:

Given that we have to find the momentum of truck

From given, 1155 kg truck has a velocity of 18 m/s

Therefore,

Mass = 1155 kg

Velocity = 18 m/s

The momentum is given by formula:

$p = m \times v$

Where, m is mass in kg and v is velocity in m/s

Substituting the values we get,

$p = 1155 \times 18\\\\p = 20790$

Thus momentum of truck is 20790 kg m/s

8 0

3 years ago