All categories

3 years ago

How do igneous rocks form?

Physics

2 answers:

kvasek [131]3 years ago

4 0

C. Heating and added pressure to existing rock.

bearhunter [10]3 years ago

3 0

Answer:

C. Cooling of molten lava and magma

Explanation:

The rocks under the surface of earth are heated at very high temperatures. They melt at these high temperatures and create magma. Magma composition depends upon the elements of the parent rocks. It also contains gases. The elements of earth crust are main elements of magma. When this magma is cooled and hardened, igneous rocks are produced. The formation of these rocks depends upon the following factors:

i) Temperature

ii) Pressure

iii) Water

iv) Parent rock composition

You might be interested in

A student throws a rock horizontally from the edge of a cliff that is 20 m high. The rock has an initial speed on 10 m/s. If air

fiasKO [112]

The distance of the rock from the base of the cliff is C) 20 m

Explanation:

The motion of the rock in this problem is a projectile motion, which consists of two independent motions:

- A uniform motion (constant velocity) along the horizontal direction

- An accelerated motion with constant acceleration (acceleration of gravity) in the vertical direction

We start by analyzing the vertical motion to find the time of flight of the rock (the time it takes to reach the ground). We can do it by using the suvat equation:

$s=u_y t+\frac{1}{2}at^2$

where, taking downward as positive direction,

s = 20 m is the vertical displacement of the rock

$u_y=0$ is the initial vertical velocity

t is the time of flight

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

Solving for t,

$t=\sqrt{\frac{2s}{g}}=\sqrt{\frac{2(20)}{9.8}}=2.02 s$

Now we can analzye the horizontal motion: the rock moves horizontally with a constant velocity of

$v_x = 10 m/s$

Therefore, the horizontal distance covered after a time t is

$d=v_x t$

and substituting t = 2.02 s, we find the final distance of the rock from the base of the cliff:

$d=(10)(2.02)=20 m$

Learn more about projectile motion:

brainly.com/question/8751410

#LearnwithBrainly

6 0

2 years ago

Kinetic energy portfolio in part 2 the independent changes to----?

Anon25 [30]

Where is the “part 2” to view ?

5 0

3 years ago

An elevator held by a single cable is ascending but slowing down. Is the work done by tension positive, negative, or zero? What

inessss [21]

Explanation:

1.) Work = Force*Distance

2.) The direction of motion lies in the same direction as the tension in the cable. So the work done by tension would be positive.

3.) The direction of the weight (due to gravity) would act opposite to the direction of motion of the elevator, so work done by gravity becomes negative.

8 0

3 years ago

Check out the list of scientific names. These names all represent animals. These are all annals but they cannot reproduce fertil

Black_prince [1.1K]

Answer:

None of the animals are from the same species

Explanation:

The exact question is as follows :

Given -

Felis catus

Sylvilagus audubonii

Parus inornatus

Euarctos americanus

Check out the list of scientific names. These names all represent animals. These are all animals but they cannot reproduce to produce fertile offspring with each other.

To find - What conclusion can be drawn from the past statement?

Solution -

The conclusion we can made from past statement is that - None of the animals are from the same species

Reason -

When two members of the same species reproduce, they produce fertile offspring.

According to the scientific names of the animals, there are different genus and species names.

6 0

3 years ago

A bag is dropped from a hovering helicopter. When the bag has fallen 2 seconds,

denis-greek [22]

A) Vt = Vo - gt
= 0 - 9.8 . 2
= - 19.6 m/sec (acting downward)
b) ∆y = Vt^2 - Vo^2 / 2g
= (-19.6)^2 - 0 / 19.6 = 19.6 meters

5 0

2 years ago