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What is the force called pushing up?
The force pushing up is called the normal force. It is exerted upwards by a surface to support an object placed on it and counteract the force of gravity pulling the object downwards.
What is a capillary melting point?
The sample is placed in a sealed capillary and heated up to the melting.
Why the Mercury-in-glass thermometer first descends and then rise when put in flame?
When placed in a flame, the glass bulb expands rapidly. This increases the volume of the bulb and so the column descends. However, the glass then conducts the heat to the mercury so that it undergoes thermal expansion and the column rises.
When a cup is placed on the table which force prevents the cup from falling on the ground?
The force of gravity pushes the cup downwards towards the ground, while the normal force exerted by the table on the cup pushes upwards, balancing out the force of gravity and preventing the cup from falling.
When water is placed in a thin glass tube it tends to climb up the walls of the tube This effect is known as capillary action What causes this capillary action?
Hydrogen Bonding
When water is placed in a thin glass tube it tends to climb up the walls of the tube. This effect is known as capillary action. What causes this capillary action?
Hydrogen Bonding
What happen to the mercury when the bulb placed in hot water?
When a thermometer bulb containing mercury is placed in hot water, the mercury inside expands, causing the level of mercury to rise. This expansion of mercury is used to measure the increase in temperature accurately.
Why does a stalk of celery wilt when placed in a glass of salt water?
Because of something called capillary action. Capillary action is the tendency of water to move upward in a capillary or thin tube, it's the same reason as to why when placed in a solution of water and red dye, the celery will turn red as well. The action causes the celery to absorb the salt water into it thouroghly and thus, it wilts.
Can gold float on mercury?
Gold is a higher density than Mercury so it will sink if placed into a container of mercury.
What side of the worm face up when placed in the tray?
its genital area is facing upwards
What will happen when wood is placed in mercury?
When wood is placed in mercury, nothing significant will happen as mercury is a relatively inert metal and will not react with the wood. The wood will simply float on the surface of the mercury due to the density difference between the two materials.
What type of blood is used for a microhematocrit test?
For a microhematocrit test, capillary blood, usually obtained from a finger or heel stick, is used. The blood sample is placed into a special capillary tube and spun in a centrifuge to separate the components, allowing for measurement of the packed cell volume (hematocrit).
