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4 years ago

If you could visit Pangaea, what animals would you most likely find there?

Physics

2 answers:

HACTEHA [7]4 years ago

6 0

Answer:

As given below.

Explanation:

1. Dinosaurs

2. Melted,

3. The skin,

4. It has to cool,

5. Gradual,

6. Sliding under,

7. The Antarctic plate must have once been closer to the equator,

8. Off the West Coast of North America,

9. Mountains

10. Plates move toward each other at convergent boundaries, and side-to-side at transform boundaries.

katen-ka-za [31]4 years ago

5 0

1B
2D
3C
4A
5B
6D
7B
8C
9A
10C

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Which diagram represents an open circuit?

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Answer : D) Circuit A

This circuit is the only circuit where it is not complete, having and open spot towards the bottom of it, making it and open circuit.

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3 years ago

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Kay [80]

Answer:

One way to increase acceleration is by changing the velocity.

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3 years ago

The gravitational force between two asteroids is 2.59 × 10 (exponent)-6 N. The centers of mass are 2000 meters away and their ma

makkiz [27]

Answer:

$2.79 \times 10^5 \ \text{kg}$

Explanation:

Newton's Law of Universal Gravitation:

$$F= G\frac{m_1 m_2}{r^2}$
F = force of gravity (N)
G = gravitational constant $(6.67 \times 10^-^1^1 \ N\frac{m^2}{kg^2})$
$m_1$ = mass of Object 1 (kg)
$m_2$ = mass of Object 2 (kg)
r = distance between the center of mass (m)

Let's convert our given information to scientific notation:

$2000 \ m \rightarrow 2.0 \times 10^3 \ m$

Now using the gravitational force and the distance between centers of mass that are given, we can plug these into Newton's law:

$2.59 \times 10^-^6 $\ N = 6.67 \times 10^-^1^1 \ N \frac{m^2}{kg^2} \times \frac{m_1 m_2}{(2.0 \times 10^3 \ m)^2}$

Remove the units for better readability.

$2.59 \times 10^-^6=6.67 \times 10^-^1^1 \frac{m_1m_2}{(2.0 \times 10^3)^2}$

Divide both sides of the equation by the gravitational constant G.

$\frac{2.59 \times 10^-^6}{6.67 \times 10^-^1^1} =\frac{m_1m_2}{(2.0 \times 10^3)^2}$

Distribute the power of 2 inside the parentheses.

$\frac{2.59 \times 10^-^6}{6.67 \times 10^-^1^1} =\frac{m_1m_2}{2.0 \times 10^6}$

If we evaluate the left side of the equation, we get:

$3.88305847 \times 10^4 = \frac{m_1m_2}{2.0 \times 10^6}$

Multiply both sides of the equation by r.

$7.76611694 \times 10^1^0= m_1m_2$

In order to find the mass of one asteroid, we can use the fact that both asteroids have the same mass, therefore, we can rewrite $m_1m_2$ as $m^2$ .

$7.76611694 \times 10^1^0= m^2$

Square root both sides of the equation.

$m=\sqrt{7.76611694 \times 10^1^0}$

$m=2.78677536 \times 10^5$
$m=2.79 \times 10^5$

Since m is in units of kg, we can state that the mass of each asteroid is 2.79 * 10⁵ kg.

3 0

3 years ago

How does electromagnetic affect people in the world ?

tangare [24]

That depends on the wavelength of the electromagnetic radiation.

-- If the waves are long, then we use them for radio, TV, and cellphones.

-- If the waves are shorter than that, then we use them for GPS in the car.

-- If the waves are shorter than that, then we use them to heat meatloaf
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-- If the waves are shorter than that, then they warm us and they
make our plants grow ... like the ones we eat.

-- If the waves are shorter than that, then our eyes use them to see with.

-- If the waves are shorter than that, then they tan our skin.

-- If the waves are shorter than that, then they can cause cancer on
our skin.

-- If the waves are shorter than that, then they can cause cancer and
other diseases in places inside our body.

5 0

4 years ago

I dont understand how to find the blanks

Amiraneli [1.4K]

The forces are:

$F_{grav} = 98,000 N$ , down

$F_{net} = 80,000 N$ , down

$F_{air}=18,000 N$ , up

Explanation:

We start by finding the force of gravity on the elephant, $F_{grav}$ , which is given by

$F_{grav}=mg$ (downward)

where

m = 10,000 kg is the mass of the elephant

$g=9.8 m/s^2$ is the acceleration of gravity

Substituting,

$F_{grav}=(10,000)(9.8)=98,000 N$

Now we know that the net acceleration of the elephant is

$a_{net}=8.0 m/s^2$ downward

We can now use Newton's second law:

$F_{net}=ma_{net}$

where $F_{net}$ is the net force on the elephant. Substituting, we find

$F_{net}=(10,000)(8.0)=80,000 N$

and it also acts downward, since it has the same direction as the acceleration.

Finally, we can write the net force on the elephant as

$F_{net}=F_{grav}-F_{air}$

where the force of gravity acts downward, while the air resistance ( $F_{air}$ acts upward. The net force also acts downward, so it has the same sign of gravity.

Substituting:

$F_{net}=80,000 N\\F_{grav}=98,000 N$

And solving, we find the air resistance:

$F_{air}=F_{grav}-F_{net}=98,000-80,000 = 18,000 N$ (upward)

Learn more about forces and Newton laws of motion:

brainly.com/question/8459017

brainly.com/question/11292757

brainly.com/question/12978926

#LearnwithBrainly

4 0

4 years ago