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What term is used to describe how much heat a circut dissipates?
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Which bulb will glow brighter with 220V - 40W or 400W?
-- The voltage makes no difference. -- The 400W device dissipates ten times as much power as the 40W device does. We don't know how much of each one's power consumption is radiated in the form of heat, UV light, etc. But if the spectral distribution of their output is similar, then the one that dissipates more power produces more visible light, and appears brighter.
Does cold absorb heat?
Sort of. In terms of physics, technically there is no such thing as cold. There is only heat, which is than measured on a scale to show how much heat is present. Heat will always transfer to something that has less heat than its present location. So technically no, cold does not absorb heat because cold is a perspective and not something that actually exists.. However, things that have less heat do absorb heat from things with more heat than itself. Cold is an abstract non physics word used to describe things with small amounts of heat, while in reality there is technically at least some measurable amount of heat if compared to true absolute 0 heat.
Does the change in temperature of an object affect how much heat it can transfer to another object?
The temperature of an object affects how much heat can be transferred. This is because if the object to which heat is transferred has high temperature then there will not be much heat transfer. Heat flows from a body of higher temperature to lower temperature.
How much the temperature of a material is changed by heat energy depends?
It depends on the amount of material (its mass), on how much heat energy is added, and on the material's heat capacity.
How much heat does a projector emit?
Modern porjectors do not give off as much heat as the old style ones did.
How much heat a human dissipates in 1 hour while sitting idle?
This depends upon external temperature, humidity of the air and air flow out side the body. Human can perspire up to one liter of sweat. So he can dissipates the the heat required to evaporate that much water.
How much amount of heat will produce in 22kilo ohm resistor?
If the resistor is conducting electrical current, then the power it dissipates (heat energy per second) is(current through it)2 times (22,000)or(voltage across it)2 divided by (22,000).If the resistor is connected in an unpowered circuit, or stored in a drawer, then it dissipates zero heat.
What property of a substance does its specific heat capacity describe?
How much heat it takes to raise the temperature
Which bulb will glow brighter with 220V - 40W or 400W?
-- The voltage makes no difference. -- The 400W device dissipates ten times as much power as the 40W device does. We don't know how much of each one's power consumption is radiated in the form of heat, UV light, etc. But if the spectral distribution of their output is similar, then the one that dissipates more power produces more visible light, and appears brighter.
What object keep too much Current from flowing through a circut?
fuse
Why is the temperature on the surface of Jupiter much lower than that on earth?
The "Surface" of Jupiter is hard to define as it is a gas giant but the top of the atmosphere (however you want ti define that) is cold due to heat radiating into space. Jupiter is so much farther from the Sun than Earth is, the Sun cannot heat Jupiter's atmosphere. And the heat form the interior (it is actually hotter than the surface of the Sun deep inside Jupiter!) dissipates into space.
What would happen if a wire is too narrow and the current is too strong?
Too narrow for what ? Too strong for what ? A narrower wire has higher resistance. The power (heat) dissipated by the wire is . . . (current)2 x (resistance). -- If the resistance is low and the current is low, the wire dissipates very little heat. You don't notice it, it doesn't start a fire, and the circuit that the wire is part of works fine. -- If the resistance or the current is somewhat higher, the wire dissipates more heat, and it gets warm. -- If the (current2 x resistance) is still higher, then the wire dissipates a lot of heat. It can be used in a toaster, a hair-dryer, an electric coffee percolator, or an electric baseboard heater. -- If the wire is inside a container from which the air has been removed, and the (current2 x resistance) is high enough to cause a short section of the wire to dissipate a fair amount of power, then you've got yourself a light-bulb. -- If the (current2 x resistance) is high enough to cause the wire to generate so much heat that it melts, then you have a fuse, which just blew.
What are ways to adapt to global warming?
Somewhat, if the ozone layer dissipates too much there will be too many UV rays for us to handle. For now, we can handle it even though it might be difficult for the people who like winter! We can take it for a long time, we can handle the heat but the Sun on us with no protection will someday be too much.
Does Global Warming affect the temperature of the Earth's Mantle?
No. The global warming affect only involves the atmosphere. Earth's mantle generates it's own heart via the slow decay of radioisotopes, and is well insulated from the cooler atmosphere by earth's oceans and crustal rock. In general, heat dissipates, so the mantle would not gain heat from the much cooler atmosphere.
What does voltage mean in a sentence?
Voltage pretty much means.. The work it takes to move charge from one point of the circut to anotherl.
Why is a resistor heated by a ac current?
A resistor is heated by any power source, AC or DC. Voltage is joules per coulomb. Current is coulombs per second. Voltage times current is work in watts or joules per second. This is heat transfer, and is manifest by the resistor getting warm. Actually, any device that dissipates power will get warm. Some of the heat energy is consumed in doing other work, such as in producing light in a light bulb, but much of it also produces heat, also such as in producing heat in a light bulb.
Why doesn't a plastic spoon in hot chocolate feel hot?
because the heat
