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trasher [3.6K]
3 years ago
13

Which intrusive igneous rock could be composed of approximately 60% pyroxene, 25% plagioclase feldspar, 10% olivine, and 5% amph

ibole?
(1) granite
(2) rhyolite
(3) gabbro
(4) basalt
Physics
1 answer:
lesantik [10]3 years ago
8 0

Answer:

(3) Gabbro

Explanation:

Gabbro is a  dark-colored, coarse-grained and intrusive igneous rock. Generally, this type of rock is having dark green or black color. The main composition of this type of rock is augite and plagioclase minerals.

The approximate composition of Gabbro rock given as

1 .25% plagioclase feldspar  

2.5% amphibole

3.10% olivine

5460% pyroxene

Therefore the answer will be (3).

(3) Gabbro

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An aircraft is coming in for a landing at 300 meters height when the propeller falls off. The aircraft is flying at 40.0 m/s hor
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given,

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speed of aircraft = 40 m/s

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moment of inertia = I = 70 Kg/m²

mass = 200 Kg

since no non conservative force  act on system, the mechanical energy is conserved after propeller fall off.

by conservation of energy

       E_i = E_f

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4 years ago
1.A particle is moving up an inclined plane. Its velocity changes from 15m/s to 10m/s in two seconds. What is its acceleration?
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\huge{ \underline{ \boxed{ \bf{ \blue{Solution:}}}}}

<h3><u>Provided</u><u>:</u><u>-</u></h3>
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  • Final velocity = 10 m/s
  • Time taken = 2 s

<h3><u>To FinD:-</u></h3>
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<h3><u>How</u><u> </u><u>to</u><u> </u><u>solve</u><u>?</u></h3>

We will solve the above Question by using equations of motion that are:-

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Here,

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  • u = Initial velocity
  • a = acceleration
  • t = time taken
  • s = distance travelled

<h3><u>Work</u><u> </u><u>out</u><u>:</u></h3>

By using first equation of motion,

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⇛ 10 = 15 + a(2)

⇛ -5 = 2a

Flipping it,

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❍ Acclearation is negative because final velocity is less than Initial velocity.

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