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3 years ago

Can someone pretty please help? will give brainliest and thats a promise

Physics

2 answers:

podryga [215]3 years ago

8 0

Answer:

slower cooling

Explanation:

Slower cooling cause the rock is very hot it will take time to cool

Hope it helps

Blababa [14]3 years ago

4 0

Medium rare cooling it takes time to cool down but I’m pretty sure igneous rocks have holes and are deformed so it would be faster hope this helps

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Two parallel-plate capacitors have the same plate area, and the gap between the plates is filled with a dielectric with a dielec

Firlakuza [10]

Answer:

e). The ratio is not given

Explanation:

<u>Capacitance of a capacitor</u>

The expression for the capacitance of a capacitor with di electric material is given as

C=KεA/d

where

ε=permittivity of di electric

C= capacitance in farads

A= Area of plate

d= separating distance

K= dielectric constant

let the distance in capacitor B be 1mm

therefore the distance in A is 0.5mm

For the first (A) capacitor

C1=8εA/0.5

C1=16εA

For the Second (B) capacitor

C2=8εA/1

C2=8εA

the ratio of the capacitance of A to B

=C1/C2

=16εA/8εA

=2/1

8 0

3 years ago

Two trains on separate tracks move toward each other. Train 1 has a speed of 109 km/h; train 2, a speed of 99.0 km/h. Train 2 bl

Rufina [12.5K]

Answer:

$f_o=592.36 Hz$

Explanation:

Given that

Train 1 (observer):

Speed = 109 km/h

Train 2 (source):

Speed = 99 km/h

Train 2 emitting frequency = 500 Hz

We know that observer and source are moving toward each other, then frequency heard by observer can be given as follows

$f_o=\left(\dfrac{C+V_o}{C-V_s}\right)f_s$

Where C is the velocity of sound (C=1225 Km/h)

Now by putting the values

$f_o=\left(\dfrac{C+V_o}{C-V_s}\right)f_s$

$f_o=\left(\dfrac{1225+109}{1225-99}\right)\times 500$

$f_o=592.36 Hz$

4 0

3 years ago

Which type of reaction is modeled by this chemical equation HELP ASAP!!!! REALLY IMPORTANT!!!

Ksju [112]

Answer:

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Scrat [10]

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3 years ago

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Nataly_w [17]

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4 years ago

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