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3 years ago

What does the theory of continental drift explain

Physics

2 answers:

fomenos3 years ago

6 0

I think it’s A. Because plates would have had to move to break up Pangaea

ki77a [65]3 years ago

5 0

The theory of continental drift is all about the formation of earth’s layers by moving and compiling with one another.

Answer: Option D

<u>Explanation :</u>

The theory of continental drift has greatly explained how Earth’s continents shift their position on the surface. The theory was quoted by Sir Alfred Wegener in 1912 but the theory was not completely accepted by the other scientists of the era in the lack of affair explanation of how continents move away from one another.

Although the theory was discarded yet, it drew a great impact on the wise brains that later on researched about the continental drift and eventually came up with the plate tectonics concept which proved to be fairly justified.

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A rocket with a mass of 62,000 kg (including fuel) is burning fuel at the rate of 150 kg/s and the speed of the exhaust gases is

mezya [45]

Answer:

h≅ 58 m

Explanation:

GIVEN:

mass of rocket M= 62,000 kg

fuel consumption rate = 150 kg/s

velocity of exhaust gases v= 6000 m/s

Now thrust = rate of fuel consumption×velocity of exhaust gases

=6000 × 150 = 900000 N

now to need calculate time t = amount of fuel consumed÷ rate

= 744/150= 4.96 sec

applying newton's law

M×a= thrust - Mg

62000 a=900000- 62000×9.8

acceleration a= 4.71 m/s^2

its height after 744 kg of its total fuel load has been consumed

$h= \frac{1}{2}at^2$

$h= \frac{1}{2}4.71\times4.96^2$

h= 58.012 m

h≅ 58 m

4 0

4 years ago

La estrella mas proxima a la tierra esta a 2 años de luz. Calcula esta distancia en unidades del SI

tino4ka555 [31]

Answer:

$2\ ly=1.89\times 10^{16}\ m$

Explanation:

The question says that, "The closest star to the earth is 2 light years away. Calculate this distance in SI units".

Given that,

The distance between the closest star and the Earth is 2 light years.

The SI unit of distance is m. It means we need to convert light years to meters. We know that,

$1\ ly=9.461\times 10^{15}\ m$

2 light-years means,

$2\ ly=2\times 9.461\times 10^{15}\ m\\\\=1.89\times 10^{16}\ m$

So, the required distance is equal to $1.89\times 10^{16}\ m$ .

5 0

3 years ago

A rocket travels 1.3 km in 62 ms. What is its average speed in m⋅s−1? Do not give your answer in scientific notation. The answer

hjlf

Answer:

Average speed = 0.35 m/s

Explanation:

Given the following data;

Distance = 1.3 Km

Time = 62 minutes

To find the average speed in m/s;

First of all, we would convert the quantities to their standard unit (S.I) of measurement;

Conversion:

1.3 kilometres to meters = 1.3 * 1000 = 1300 meters

For time;

1 minute = 60 seconds

62 minutes = X

Cross-multiplying, we have;

X = 62 * 60

X = 3720 seconds

Now, we can calculate the average speed in m/s using the formula;

$Speed = \frac {distance}{time}$

$Speed = \frac {1300}{3720}$

Average speed = 0.35 m/s

7 0

4 years ago

What did Belgium do to the congo?

timama [110]

Answer:

They killed 10 million people and registered it as a colony

Explanation:

Brainliest helps

4 0

3 years ago

Find α, the angular acceleration of the wheel, which results from F⃗ pulling the string to the left. Use the standard convention

kap26 [50]

Answer:

α = F/(k×m×r)

Explanation:

When the wheel is pulled to turn in a counterclockwise direction, the wheel will have a moment of inertia given by Iw = k×m×r²

Where k = the radius of gyration of the wheel which is a dimensionless quantity less than one.

m = the mass of the wheel

r = the radius of the wheel

First and foremost, we relate the torque (τ) about the axle of the wheel to the force (F) applied on the wheel and we have that τ = r × F

We then relate the torque on the wheel to the angular acceleration (α), we have that τ = Iw × α, where Iw is the moment of inertia of the wheel as explained above

Substituting for torque τ and moment of inertia I into the above equation we have that

r × F = k×m×r² × α

solving for α we have that

α = r × F /(k×m×r²)

Therefore

α = F/(k×m×r)

8 0

4 years ago