Answer:
a. part of the planet's interior is liquid
Explanation:
Seismic waves are slowed down in a liquid medium. On earth, molten areas reduces the speed of P waves and completely stops S waves which have shearing motion that can only be transmitted through a solid
The motion has the highest speed in materials, allowing it to be detected first on seismograms. The P wave is has a smaller wavelength and a higher frequency than the surface ans the S waves.
Answer:
it will take 
to reach its final rotating speed
Explanation:
Let initially the turntable is at rest
So its initial angular velocity will be 
Let the turn table is rotating with an angular acceleration 
According to first equation of motion
We know that 
, here 
So
So it will take to reach its final rotating speed
Since our earlobes repeatedly bounce from our inner ear twords the eardrums, this is compeltely true.
Explanation:
When there is no change in chemical composition of a substance then it is known as physical change.
When we say that mass is conserved during a physical change then it means that total mass of the substance or object will remain the same from beginning till the end.
For example, a metal box of mass 20 grams is beaten with hammer. Its shape will change which is a physical change and after beaten with the hammer its mass still remains 20 grams.
<span>Plants there are a lot. Australian plants are extremely hardy an have adapted to grow in conditions others have not. So when taken outside of Australia they do very, very well. Animals, less so. But there are a few very interesting cases.
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