<span>Since a P-wave can travel anywhere between 1.5 and 8 kilometers per second, then it is all a matter of multiply those numbers by how many seconds there are in total in 9 minutes and 20 seconds. If that is the case, then a P-wave will travel at least 840 kilometers in the said time frame.</span>

5 0

3 years ago

State why the populations decrease between july and December

drek231 [11]

Answer:

hey

Explanation:

i think so in this link u can find the answer i cant write the whole its quite long

https://www.syvum.com/cgi/online/fillin.cgi/exam/regents/living_environment/january_2016.tdf?4

3 0

3 years ago

Read 2 more answers

Mountaintop removal mining exposes rock that _______ heavy metals and other toxic chemicals into the environment.

Otrada [13]

Answer:

leaches

Explanation:

I am taking human geography in high school and I got this exact question.

8 0

2 years ago

Most of the time in the atmosphere, the upward-directed pressure gradient force is exceeded by the downward pull of gravity.

Lisa [10]

Answer:

Ture

Explanation:

The pressure gradient is the force that is produced due to the rotation of earth pressure cells that creates lighter air to move upwards and heavier to move downwards due to the difference in densities of air.

As the air above consists of lighter elements the oceanic air mostly consist of diatomic molecules of oxygen and nitrogen thus containing a large amount of water vapor, all these molecules have a mass that are pulled down by the gravity and this pull of gravity on columns of gas applies a force what we see an atmospheric pressure.

The gas particles and molecules of heavy and denser matter get stuck at the ground, similarly, as the air cools is descends and warm air rises. Thus upwards and downward motion of air causes convergence and divergence of molecules.

3 0

3 years ago