1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Artemon [7]
2 years ago
10

8. How is the crystal size different for extrusive and intrusive igneous rocks?

Physics
1 answer:
eduard2 years ago
7 0
<span>Igneous rocks which form by the crystallization of magma at a depth within the Earth are called intrusive rocks. Intrusive rocks are characterized by large crystal sizes, i.e., their visual appearance shows individual crystals interlocked together to form the rock mass.  hope that helped</span>
You might be interested in
Mation about your sour
Ann [662]

(#1). (D).

(#2). (C).

8 0
3 years ago
Weight is a force that depends on mass and ?
Maksim231197 [3]

Answer:

Gravitational force.

8 0
2 years ago
1. A listener stands 20.0 m from a speaker that pumps out music with a power output of 100.0 W.
marta [7]

(1.a) The surface area being vibrated by the time the sound reaches the listener is 5,026.55 m².

(1.b) The intensity of the sound wave as it reaches the person listening is 0.02 W/m².

(1.c) The relative intensity of the sound as heard by the listener is 103 dB.

(2.a) The speed of sound if the air temperature is 15⁰C is 340.3 m/s.

(2.b) The frequency of the sound heard by the suspect is 614.3 Hz.

<h3>Surface area being vibrated</h3>

The surface area being vibrated by the time the sound reaches the listener is calculated as follows;

A = 4πr²

A = 4π x (20)²

A = 5,026.55 m²

<h3>Intensity of the sound</h3>

The intensity of the sound is calculated as follows;

I = P/A

I = (100) / (5,026.55)

I = 0.02 W/m²

<h3>Relative intensity of the sound</h3>

B = 10log(\frac{I}{I_0} )\\\\B = 10 \times log(\frac{0.02}{10^{-12}} )\\\\B = 103 \ dB

<h3>Speed of sound at the given temperature</h3>

v= 331.3\sqrt{1 + \frac{T}{273} } \\\\v = 331.3\sqrt{1 + \frac{15}{273} } \\\\v = 340.3 \ m/s

<h3>Frequency of the sound</h3>

The frequency of the sound heard is determined by applying Doppler effect.

f_o = f_s(\frac{v \pm v_0}{v \pm v_s} )

where;

  • -v₀ is velocity of the observer moving away from the source
  • -vs is the velocity of the source moving towards the observer
  • fs is the source frequency
  • fo is the observed frequency
  • v is speed of sound

f_0 = f_s(\frac{v-v_0}{v- v_s} )

f_0 = 512(\frac{340.3 - 10}{340.3 - 65} )\\\\f_0 = 614.3 \ Hz

Learn more about intensity of sound here: brainly.com/question/17062836

3 0
1 year ago
Match the object with its characteristic.
Triss [41]
What object do you need to match
8 0
3 years ago
True or False: A cross product is an equation which states that two ratios are equal.
elena-14-01-66 [18.8K]
I think the answer would be false
6 0
2 years ago
Read 2 more answers
Other questions:
  • 4: Which of the following is true of an object in a circular motion at a constant speed?
    6·1 answer
  • how far the medium (crests and troughs, or compressions and rarefactions) moves from ________ the place the medium is when not m
    10·1 answer
  • What weighs exactly 500 grams in the house?
    8·1 answer
  • Which type of energy in gasoline is transformed into mechanical energy in a motorcycle engine?
    6·2 answers
  • In the following diagram, the voltage is 1.5 volts and the resistance is 7.5 ohms. Use Ohm's law to determine the current in the
    7·2 answers
  • A tuning fork produced four beats per second with a second, 270-Hz tuning fork. What are the two possible frequencies of the fir
    11·1 answer
  • What is the frequency of an X-ray with wavelength 0.13 nm ? Assume that the wave travels in free space. Express your answer to t
    10·1 answer
  • Which of the following are vector quantities? Check all that apply.
    5·1 answer
  • PLEASE HELP!! I'll mark brainliest for correct answer.
    13·1 answer
  • Elephants can communicate over distances as far as 6 km by using very low-frequency sound waves. What is the wavelength of a 10
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!