Why Couldnt We Heat a Metal Up to 100 Deg C by Dipping It into Boiling Water?

The metal gains some heat, the water loses it. So the water's temperature decreases. The water temperature has to end up at something less than 100 degrees, and of course the metal wo not go higher than the water temperature. So getting a temperature less than 100 degrees is expected. You could measure the temperature of the water and the temperature of the metal separately. If they are the same, then you've got thermal equilibrium. Of course, if you keep adding heat to the water to keep it boiling, you can keep it at 100 degrees, and then the metal will get there too. But if you stop adding heat and then add the metal, getting less than 100 degrees is expected.

1. How do pebbles absorb heat

As long as the pebble is colder than the incident heat, it will absorb energy. This is a fundamental concept in heat transfer - heat travels from a high energy regime to one of lower energy.

2. heat pump condenser fan not running in winter

Heat pumps work by removing heat from the environment and exchanging it "elsewhere." In the summer, the heat is removed from the environment inside your house and ejected outside.For the cold seasons, the air outside has heat removed from it and transferred to the inside of your house. This works great until temperatures reach 20-25 F, at which point, the efficiency drops below that of the equivalent elecrical consumption of a resistance heater.It would appear, based on your description, that you are in need of that additional device for your system.There is some variance regarding temperature balance, with lower figures attributed to higher performing, more efficient heat pumps.Some information located here: Heat pump explanation

3. Does a hat do ANYTHING at all to prevent a heat stroke?

Does a hat do ANYTHING at all to prevent a heat stroke? YES. Heat strokeis an acute condition which occurs when the body produces or absorbs more heat than it can dissipate. It is usually due to excessive exposure to heat. The heat-regulating mechanisms of the body eventually become overwhelmed and unable to effectively deal with the heat, and body temperature climbs uncontrollably. If not treated, heat stroke can be fatal. So how to avoid getting a heat stroke? Here are some points to help stay cool, literally. Wear a cap or a hat - One of the easiest solutions of providing relief from the summer sun. Caps and hats are not only portable, they could also be a fashion statement while providing your head, face and eyes with shade and protection from the summer heat. Bring and actually use umbrellas - Unless you have a cap or a hat large enough to provide shade for your entire body do not bother to bring an umbrella at all. Alas, no such hat or cap exists so it's better to bring an umbrella every time you go out into the summer heat. Like caps and hats, umbrellas too can be a fashion statement. Bring hand fans or portable electric fans - Fans comes in all shapes, sizes, colors and designs. They bring a steady breeze to keep you cool or in the absence of a cap or hat, provide some shade to your head or face whenever the sun shines too hot on you. If you run out of muscle power there are small and portable electric fans that are battery-powered. Usually the size of a small flashlight some could even be fitted in specially designed caps or hats. Either choice of hand or electric portable fans would help you stay cool and safe this summer. Wear loose or comfortable clothes with light materials - Trust me, summer time is not the time to strut those coats, suits and jackets because even if you are a member of a boyband like Backstreet boys (when they were still young and cool), a few hours under the sun wrapped in those heavy clothings will do nasty things to your body, in this case a heatstroke. Wear clothes made from cotton, silk, satin or other light fabrics that the wind could easily penetrate. Again, bringing out your summer outfit would keep you cool, both fashion-wise and literally. Avoid wearing clothes with dark colors - This is a follow up to the previous tip. Black, gray and other earth colors must be avoided this summer because these colors tend to retain your body heat and bring in more heat from the outside by absorbing them. Trust me, even if you are feeling emoish (which I hope not), you would soon find that wearing long-sleeved black shirts with matching tight black pants with chains and all is not a good idea if you are going out for a stroll under the summer sun. Drink more water or other fluids than the usuall - Whenever going out in the heat of the day, bring with you something drink. Water, fruit juices even energy drinks would do the job of replenishing your lost body fluids due to the heat which induces sweating. Avoid alcohol, coffee and tea because they help in dehydrating your body which you do not want to happen. It's better to go to the bathroom more than the usual just to pee than going to the hospital and be treated for heatstroke. Believe me, it could kill you. Stay in the shade - This is the simplest and most effective way of avoiding a heatstroke. There's a big difference between getting a tan and getting fried like an egg under the heat of the sun. For some strange reason you do not follow the above-mentioned tips and you do the exact opposite of them, how do you are suffering from heatstroke? Here are the general symptoms: high body temperature the absence of sweating, with hot red or flushed dry skin rapid pulse difficulty breathing strange behavior hallucinations confusion agitation disorientation seizure coma

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