What happens when a mechanical wave travels through medium

Wind is the horizontal movement of air from an area of high pressure to an area of low pressure.

Winds are caused by differences in air pressure. 

These differences are caused by the uneven heating of the Earth’s surface.

Winds are named by their direction (where they originate from) and speed.

Wind speed is measured by an anemometer.

v    Local Winds: winds that blow over short distances-caused by the uneven heating of Earth’s surface within a small area.  They form only when large-scale winds are weak.

Ø     Sea Breeze: a local wind that blows from an ocean or a lake.

§         Occurs because land heats up faster than water – The warm air expands creating an area of low pressure over the land, so the cooler more dense air moves toward the low-pressure land area.

Ø     Land Breeze: a local wind that blows from the land toward water

§        Occurs because land cools faster than water – The low pressure (less dense) air is now over the water.  The warm less dense air rises so the cooler air from the land moves toward that low pressure area by the water.

Nitrogen can also bond with otherthree atoms because of its outer shell (valence shell) that has three electrons.This is the reason why organic molecules can be so large because of thisbonding. Suppose you have a compound of NH3. You know that hydrogen can onlyshare 1 electron because 7 of its electrons are filled. Also, in nitrogen, it canonly share 3 electrons because 5 of it are already filled. That is why nitrogenneeds three hydrogen to form NH3. 

Answer: 250 kJ

Explanation: According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.

According to Hess’s law, the chemical equation can be treated as algebraic expressions and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.

  (1)

  (2)

Net chemical equation:

  (3)

Adding 1 and 2 we get,

  (4)

Now dividing equation (4) by 4, we get

  (4)

Devising a way to achieve the goals is the most important when setting goals.

Devising a way to achieve the goals

Explanation:

The fundamental objective for progress is Breaking down any long haul objectives into littler increasingly feasible objectives that help to advance accomplishment and achievement. While defining objectives, it makes its needs unmistakable for everybody associated with the association.

The reason for objective setting is to people what they have to concentrate on the most during the up and coming quarter, which at that point encourages them to have the option to organize their assignments.

Since it accomplishes an effective, engaged and definitive way by taking the correct activities in a lesser time period throughout everyday life.

the answer maybe B or A