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What has symptoms of sudden weakness dizziness fatigue?
There are a number of conditions that can cause weakness, dizziness and fatigue, including hypoglycemia, flu, cold, peptic ulcer, and heat stroke.
what is a cold resistance and hot resistance?
"Cold Resistance" as would be measured by an ohm-meter or digital multimeter and a "Hot Resistance". The latter is a phenomenem of the material used for forming the the resistance itself, it has a temperature co-efficient which often once heated alters the initial resistance value, usually dramatically upward. Heat resistance is able to resist and remain unaffected by heat heat-resistant gels are used in stage lighting These table mats are heat-resistant up to 100 degrees Celsius. The outside of the space shuttle is covered in heat-resistant tiles. Transfer the liquid to a heat-resistant bowl.
What do you mean by 'cold resistance' and 'hot resistance'?
Metals that make up typical resistors (and many other electrical components for that matter) tend to heat up as current flows through them. "COLD" resistance is the resistance before it is operating and "HOT" resistance is the resistance after some operating time has elapsed.
What are cold resistance and hot resistance?
Metals heat up as electrical currents flow through them. Cold resistance is the metals resistance before it is operating. Hot resistance is the metals resistance after operating time has elapsed some.
Do alloys produce heat resistance?
Alloys can add heat resistance to a metal
What is cold resistance?
That is e.g. the resistance of a cold bulb before the bulb is lighted and heats up.
How does a heat pump operate efficiently below freezing temperatures?
A heat pump operates efficiently below freezing temperatures by using a backup heating system, such as electric resistance heating, to provide additional heat when the outside air is too cold for the heat pump to extract enough heat. This allows the heat pump to continue operating efficiently and effectively in cold weather.
How does heat and cold cause weathering?
Heat causes expansion of rocks, leading to stress and eventual breakdown due to thermal fatigue. Cold temperatures can cause rocks to contract, leading to cracking and weakening of their structure over time. This constant expansion and contraction due to temperature fluctuations can accelerate the weathering process.
What has the author Stephen Victor Sweby written?
Stephen Victor Sweby has written: 'Fatigue crack growth resistance of as processed and heat treated continuous fibre reinforced titanium based metal matrix composites'
How do we calculate the cold resistance of the bulb?
The cold resistance of a bulb can be approximated by measuring the resistance of the filament with a multimeter when the bulb is turned off and at room temperature. The resistance measured in this state can give an estimation of the cold resistance of the bulb. Keep in mind that this value may not be exact due to factors like the temperature coefficient of resistance and the non-linear behavior of the filament's resistance.
What is the relationship between cold and heat, and how can we define cold as the absence of heat?
Cold and heat are related in that they are both forms of thermal energy. Heat is the presence of thermal energy, while cold is the absence of heat. Cold can be defined as a lower level of thermal energy compared to heat.
How do heat pumps work below freezing temperatures?
Heat pumps can still work below freezing temperatures by using a backup heating source, such as electric resistance heating, to provide warmth when the outside air is too cold for the heat pump to efficiently extract heat.
