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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

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What does fitness mean to you?

Lana71 [14]

Answer:

fitness is a physical exercise to mainten the body healthy and fit

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3 years ago

Read 2 more answers

Newton's Law of Cooling states that the rate of cooling of an object is proportional to the temperature difference between the o

Hoochie [10]

Answer:

$\frac{dy}{dt}=k(y_t-R)$

Explanation:

According to Newton’s law of cooling, the rate of loss of heat from a body and the difference in the temperature of the body and its surroundings are proportional to each other.

$\frac{dy}{dt}=k(y_t-R)$

Here, $y_t$ represents temperature at time t, R as the room temperature, t as the independent variable, y as the dependent variable.

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4 years ago

What is the mass of a truck if it is accelerating at a rate of 5 m/s2 and hits a parked car with a

sineoko [7]

Answer:

<h3>The answer is 2800 kg</h3>

Explanation:

The mass of the truck can be found by using the formula

$m = \frac{f}{a} \\$

f is the force

a is the acceleration

From the question we have

$m = \frac{14000}{5} \\$

We have the final answer as

Hope this helps you

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3 years ago

You can jump 3 m (10 feet) off of a diving board and into a swimming pool and be uninjured. However, if you jumped from the same

Mrac [35]

Answer:

1) this is due to force due to momentum change of a body falling from such a height.

2) they move with velocity of 2.69 m/s towards the right.

Explanation:

1) in the case where one jumps 3 meters into water, the water deform on impact extending the time of impact for your body's momentum to get to zero, so that the time it takes for the momentum of your body due to your mass and your velocity to get to zero is relatively long lessening the force felt due to the impact.

For a fall from the same height onto a concrete, the concrete does not deform at all. This means that there is a very short time for your momentum to get to zero and hence the force is huge. In order to cushion this a little, your body deforms in a bid to reduce the force and this is very deadly.

This is in line with Newton's second law of motion which states that the rate of change of momentum is proportional to the force produced.

M1 = 125 kg

M2 = 80 kg

V1 = 2.5 m/s

V2 = 3 m/s

From momentum conservation, total initial momentum must be equal to the total momentum after collision.

Momentum = mass x velocity.

That is,

M1V1 + M2V2 = (M1 + M2) Vf

Where Vf is their final velocity together.

Note that the masses stick together because the collision is inelastic.

Substituting and solving, we have