Physics Form 4 Chapter 3

Also the amount of air molecules is greater at lower altitudes than at a high altitude. If an air molecule hits another air molecule even more air pressure happens. Air pressure can be felt while riding an express elevator to the top floor of a really tall building. Also it can be felt by diving all the way to the bottom of a swimming pool. The air pressure can also be formed when there is a lot of wind which causes the air molecules in the air to move around even faster and crash into each other even more.

*Intravenous (IV) injection administration – The medicine is administered directly into the veins. Medicines are rapidly absorbed into the body via this route, which is advantageous when a situation is life threatening.

The article “Down go the dams” by Jane C.Marks aim to provide an informative view on the current pending issue on Dams. The article starts out my mentioning the important nature of dams in our society. For example, Jane C.Marks states that today about 800,000 dams operate worldwide as well as the fact that most were built in the past century, primarily after World War II. Furthermore, the author lays down informative facts about dams such as the fact that dams control flooding and their reservoirs provide a reliable supply of water for irrigation, drinking and recreation which are all very important to society. In an economic standpoint, although it is very high maintenance dams provide jobs for people. The

A sample of gas is trapped in a sealed container, which has a movable lid. Moving the lid up or down will change the volume inside the container. You will use an attached manometer to measure the pressure inside the container.

The pressure of a gas sample increases for a decrease in volume and decreases for an increase in volume.

where F is force (5N) , m is mass (5kg), and a is acceleration (you have to find acceleration)

D. An object has a density of 11.3 g/cm3. If it weighs 7.0 g and you added it to a graduated cylinder with 5.0 mL of water, what will be the new volume of water in the cylinder after the object is added?

1) What happens to the vapor pressure of water after the heat source is removed? What observation is proof of this? After the heat source was removed, the vapor pressure was decreased. This is proven by the boiling stopping.

Task Description:The world communicates by making extensive use of the electromagnetic spectrum. For the average person this is commonly accessed using radio waves. These radio waves may be over the AM or FM radio wave bands or the radio waves that transmit our television signals. Not only are people always within a ‘phone call of each other anywhere in the world they are also able to find out exactly where in the world they are by use of

The Pacinian corpuscle and free nerve ending will likely not have a membrane protein that recognizes other molecules because their stimulus modality are not chemical unlike the olfactory receptors.

Robert Boyle, a philosopher and theologian, studied the properties of gases in the 17th century. He noticed that gases behave similarly to springs; when compressed or expanded, they tend to ‘spring’ back to their original volume. He published his findings in 1662 in a monograph entitled The Spring of the Air and Its Effects. You will make observations similar to those of Robert Boyle and learn about the relationship between the pressure and volume of an ideal gas.

4.   Why were these changes seen?>> When the valves are closed simulating blocked collecting ducts, the built up pressure caused by the increased solute volume opposes the forces driving up the filtration tasks of the kidney. The nephrons could burst if the filtering task is continued so the kidney is just trying to save ‘itself.

INTRODUCTION: Water assets building is growing massively today. Dams have the most vital part in using water assets. They were developed taxing year before increasing present data about hydrology and hydro mechanics. All through the historical backdrop of the world, dams have been utilized effectively as a part of gathering, putting away and overseeing water expected to manage human advancement. Dams have a lot of positive and negative impacts on the earth. Their advantages like controlling stream administration, subsequently forestalling surges, getting local and water system water from put away water and creating vitality from hydro control. While dam give noteworthy advantage to our general public, their effect on the encompassing incorporates resettlement and migration, financial effect, natural concerns, sedimentation issue, security angles and so on. Notwithstanding their vital social and natural advantages, it is vital to minimize the negative impacts of the hoover dam on the earth with respect to feasible advancement.

The relevance is given as we need an adequate material to build the dam as well as enough water to achieve a water level and finally to maintain that level. It also should be thought about a solution for the silt coming down the river in order to keep on getting a clear flush.

4) Plot Mactual vs h and Mtheoretical vs h on the same graph (h on the x-axis.) What does the shape of the graph indicate about the hydrostatic force for each case (partially and fully submerged)?