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3 years ago

Which is the most accurate description of compounds?

Physics

1 answer:

ozzi3 years ago

5 0

Answer:

OC) They are the basic building blocks of matter.

They are made up of atoms of 2 or more elements that are

chemically combined.

Explanation:

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An earthquake produces longitudinal P waves that travel outward at 8000 m/s and transverse S waves that move at 4500 m/s. A seis

vivado [14]

Answer:

1234285.7 m or 1234.3 km

Explanation:

Let the distance be $d$ , the time taken by P waves be $t_P$ and the time taken by the S waves be $t_S$ .

$\text{Velocity}\dfrac{\text{Distance}}{\text{Time}}$

$\text{Time}\dfrac{\text{Distance}}{\text{Velocity}}$

For the P waves,

$t_P=\dfrac{d}{8000}$

$d=8000t_P$

For the S waves,

$t_S=\dfrac{d}{4500}$

$d=4500t_S$

Equating the $d$ ,

$8000t_P=4500t_S$

Divide both sides of the equation by 500 to reduce the terms.

$16t_P=9t_S$

Since S waves arrive 2 minutes (= 120 seconds) after P waves,

$t_S-t_P=120$

$t_S=120+t_P$

Substitute this in the equation of the distance.

$16t_P=9(t_P+120)$

$16t_P=9t_P+1080$

$7t_P=1080$

$t_P=\dfrac{1080}{7}$

Substitute this in the equation for $d$ involving $t_P$ .

$d=8000t_P$

$d=8000\times\dfrac{1080}{7}$

$d=1234285.7 \text{ m }= 1234.3 \text{ km}$

4 0

3 years ago

What is the differences between up milling and down milling?

MAXImum [283]

In up milling the cutter rotates clockwise when cutting the workpiece from right to left. in down milling the cutter rotates clockwise when cutting the workpiece from left to right

5 0

3 years ago

Read 2 more answers

What is dependent variable?

Schach [20]

Answer:

A dependent variable is a variable whose value will change depending on the value of another variable, called the independent variable.
The variation of a dependent variable is usually the one being researched and studied between the two variable types (dependent and independent). It is done through regression and alteration of inputs and the development of regression models based on theoretical studies.
The dependent variable is dubbed dependent because it is thought to depend in some way on the variations of the independent variable.

3 0

2 years ago

A house is wired so that one electrical source comes to a room but many outlets and lights work from that source. When one light

Lyrx [107]

Its parallel, did this help?

6 0

4 years ago

What is the wave velocity if the wave length is 100 cm and the frequency is 2 Hz?

Mademuasel [1]

Answer:

velocity = 2m/s

using v=fΠ

convert 100 CM to m

4 0

4 years ago