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How does a plastic stopper in a thermos bottle control heat transfer?
A plastic stopper in a thermos bottle helps to control heat transfer by minimizing conduction through the opening, where heat can escape or enter. The plastic acts as an insulator, reducing heat loss or gain from the contents inside the thermos. This helps to maintain the temperature of the liquid for a longer period.
Why is it important to touch a charged object to the metal rod of an electroscope and not to the rubber stopper?
Touching the charged object to the metal rod allows the electrons to transfer easily to the electroscope, causing the leaves to diverge due to like charges repelling. The rubber stopper acts as an insulator, preventing the transfer of charge effectively and resulting in no movement of the leaves.
How can the structure of the vacuum flask minimise energy transfer by conduction convection and radiation?
The structure of a vacuum flask minimizes energy transfer by conduction, convection, and radiation by having a double-walled design with a vacuum layer between the walls. This vacuum layer acts as an insulator, reducing heat transfer through conduction and convection. Additionally, the reflective surface on the inner wall minimizes radiation heat transfer.
What provides the centripetal force needed to keep the stopper moving in a circle?
The tension in the string provides the centripetal force needed to keep the stopper moving in a circle. This tension pulls the stopper towards the center of the circle, maintaining the circular motion.
What happens if the mass of the stopper is increased?
Increasing the mass of the stopper will increase its inertia, leading to a slower rate of rotation during the circular motion. This change may alter the centripetal force required to keep the stopper in motion, affecting the overall dynamics of the system.
How does the structure of a vacuum flask minimise energy transfer?
The vacuum between the two layers cannot conduct heat.The silvering on the inside reflects heat back to the contents.The stopper prevents heat loss by convection.The stopper is made of poor thermal conductors.
How does a plastic stopper in a thermos bottle control heat transfer?
A plastic stopper in a thermos bottle helps to control heat transfer by minimizing conduction through the opening, where heat can escape or enter. The plastic acts as an insulator, reducing heat loss or gain from the contents inside the thermos. This helps to maintain the temperature of the liquid for a longer period.
What are the reasons for the using glass-stopper bottles for acids and plastic stoppered bottles for bases?
If strong bases are present in the glass-stopper bottles, they may react with the glass and etch it or change the concentration of the base. Hence plastic-stopper bottles are used for bases.
Does cooks champagne have a cork or plastic stopper?
a cork regards ´LG
Stopcock, Plastic Stopper, can react the sulphuric acid. is it working or not?
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What are the different parts of a sink drain stopper?
A sink drain stopper typically consists of a knob or lever for lifting and lowering the stopper, a rubber gasket or seal to create a watertight seal, and a metal or plastic body that fits into the drain opening.
How do you fix a broken clip on a phiten necklace?
Things you need: -rubber stopper bead -plastic clasp-scissors-knowledge of sewing What to do: 1st. cut the end right at the bottom of the loop, then if there is any piece of the clasp left remove it. After that slip the rubber stopper bead on the single strand then but on one half of the plastic clasp, next make a loop and sew it to the strand after that you slip the rubber stopper bead up. continue on the other side. Now the problem is finding the supplies (plastic clasp and rubber stopper bead)
What is a 'Bow-stopper' and 'Chain stoppre?
A bow stopper is a fitting to secure the anchor chain or rode to the vessel's bow when the anchor is raised. A chain stopper is used to hold the anchor chain in place and relieve strain on the windlass when the anchor is deployed or retrieved.
Why must reagents stopper be laid upside down?
If they are laid so that the part of the stopper that is in the bottle is able to touch the workbench, then they can either pick up contaminants that will transfer to the liquid when replacing the stopper, or they can transfer small quantities of possibly corrosive or toxic liquids, that they have picked up when the bottle was shaken or moved, to the workbench surface that can subsequently produce a safety hazard.
How can I create a DIY drain stopper for my sink?
To create a DIY drain stopper for your sink, you can use a rubber cork or a suction cup with a small piece of plastic or metal attached to it. Simply place the stopper over the drain opening to prevent water from flowing through.
How do you add oil to a 1980 Camaro?
Look for the valve cover. There should be a stopper or plastic screw off thing.
Why is it important to touch a charged object to the metal rod of an electroscope and not to the rubber stopper?
Touching the charged object to the metal rod allows the electrons to transfer easily to the electroscope, causing the leaves to diverge due to like charges repelling. The rubber stopper acts as an insulator, preventing the transfer of charge effectively and resulting in no movement of the leaves.
