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What is the weight of water displaced by a 100-ton floating ship?

Displacement tonnage is the weight of a vessel based on the volume of water displaced by its hull. Another way to describe displacement tonnage is the volume of water that must be moved to bear the weight of the ship. The buoyancy of an object determines its tendency to float on or sink in the water.

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What are some dangers of not recycling?

By not recycling, people are potentially destroying natural habitats for animals, therefore putting precious wildlife at risk. In addition to this, paper recycling helps to save trees, which further protects many wildlife species that make their shelters in trees. When items are made from recycled materials, they also help to create less pollution and use less water.

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What does the frontal lobe control?

The frontal lobe is also responsible for carrying out higher mental processes. This portion of the brain allows individuals to think, make decisions and plan for the future. The frontal lobe is utilized every day and is larger in humans than it is in any other organism. It is located in the front of the brain and can be divided into a left and a right hemisphere.

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How do you measure something in enthalpy units?

Prepare the calorimeterClean the calorimeter, and dry it well. Weigh the empty calorimeter on a scale. Put 10 centimeters of magnesium ribbon in the calorimeter, and weigh it again. Take the mass to 0.001 grams.\nMeasure the hydrogen chloridePour 50 centimeters-cubed into a cylinder. Find the temperature once every minute for four minutes. Add the hydrogen chloride to the calorimeterPour the hydrogen chloride into the calorimeter, and shut the lid. Stir the mixture constantly. Drop the thermometer in the calorimeter every 30 seconds for seven minutes. Record each temperature on a sheet of pape..

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What is the largest organelle in plant cells containing the cell sap?

A membrane called the tonoplast surrounds the vacuole. As the plant cell grows, smaller vacuoles fuse together to form one large central vacuole.\nOne of the main functions of the vacuole is storage. The plant cell vacuole stores cell sap, which is a general term used to describe the various possible contents of a vacuole. Some plant cell sap consists of plant pigments, while others contain proteins to nourish a seed, salts and minerals, or chemicals that taste bad to insects. Another function of the vacuole is to lend support and structure to the plant cell.

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What are some common electromagnetic devices?

Loudspeakers use an electromagnet and a permanent magnet to produce sounds. The electromagnet is attached to the speaker cone, and moves in relation to the permanent magnet when a current is run through it. These vibrations of the speaker cone are what produce the voices and music. An electromagnet is rapidly turned on and off in a door bell, pulling the iron arm rapidly against the bell to make an alarm. Electromagnetic locks pull the lock's plunger through the door and do not release until the electromagnet is turned off.\nMaglev trains use electromagnets to propel themselves forward. P..

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What is road tar made of?

Bitumen is solid at low temperatures, but turns into a liquid at high temperatures. Tar is usually applied while hot so that it flows down into road cracks easily. Once cooled it turns into a semisolid substance. On days with a high ambient temperature tar becomes soft, and can become loose and pull away from the roads. This leads to the oil contained inside the tar being sprayed onto the lower panels of vehicles passing over them.

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What is the purpose of tubular reabsorption?

The initial filtering process of the kidneys is rather imprecise and claims a large amount of materials in excess of the actual wastes. The materials that enter the kidneys or stay in the blood are selected simply based on size. Thus, large particles such as blood plasma proteins and red blood cells do not pass into the kidneys, while water and smaller solutes do.\nTubular reabsorption occurs, as the name implies, in the renal tubules. Depending on the materials involved, it is accomplished via diffusion and active transport. Sodium ions, for instance, require active transport, and indeed movi..

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What are some facts about fir trees?

There are over 50 species of fir trees, including the Red fir, the Santa Lucia fir, the Balsam fir, the Alpine fir and the European fir.\nFir trees have needles that resemble toothbrush bristles and branches arranged in a pyramid-like structure. The leaves are flattened to the point of appearing almost pressed. The undersides of fir leaves have two whitish, waxy strips while the upper surfaces are shiny.\nThe cones of fir trees are raised and cylindrical in shape. Female cones turn brown when they mature and disintegrate seeds near the end of autumn.\nOld fir trees have thick, ridged bark, and..

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What is the life cycle of bacteria?

During the lag phase, bacteria do not grow. They only adjust to their environment and metabolize, producing the amino acids and vitamins that they need for division. In this stage, they also make copies of DNA. If there are enough nutrients available, this phase may be very short.\nIn the exponential or log phase, bacteria multiply rapidly. Under favorable conditions, bacteria can double in approximately 15 minutes. However, bacteria sometimes takes days to multiply. The amount of time a culture takes to double is referred to as "generation time".\nBacteria multiply through a process known as ..

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