Conceptual Physics (12th Edition)
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Angle of the planet SRegion AIt has a colder ... more
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Loose electrons help in the transfer of energy ... more
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Conductivity of metal is more than the air. ; ... more
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Material C is a poor conductor of heat and does ... more
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Due to lack of free electrons to transfer energy ... more
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A good insulator slows down the passage of heat... more
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Volume increasesTemperature decreases ; When the ... more
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IncreasesDecreases ; If a molecule strikes with ... more
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The speed increases. ; The air from the object P ... more
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Speed decreases ; Air expands against atmosphere, ... more
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The hot steam cools down by expanding and mixing ... more
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Due to the change in temperature of the land in ... more
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Electromagnetic waves ; Energy that travels and ... more
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Short wavelength ; Frequency is the rate of ... more
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Directly proportional ; Peak frequency increases ... more
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Radiation emitted by the Earth. ; Earth also emits... more
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The radiant energy emitted by a star S is of high... more
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Absorption of energy occurs simultaneously with ... more
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The relative temperature of the objects with the ... more
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The black one will become hot and cool faster ; ... more
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NoFor good absorber the surface must be darker ... more
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Pupils do not reflect any light, as a result they ... more
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Temperature decreases ; If an object emits energy ... more
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Since the conductivity of the object is poor so ... more
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A red hot poker in a cold oven ; Since the rate of... more
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Yes ; Warming and cooling process arises from the ... more
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The day and night will experience extreme ... more
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High energy waves have shorter wavelengths and can... more
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Weather is the condition of atmosphere at a given ... more
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1400 J ; The value of solar constant is 1400 J, ... more
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Vacuum prevents the heat loss due to convection.... more
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Since metal is a good conductor of heat and ... more
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The energy emitted by the hot filaments are at the... more
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On clear night sky there is no cloud so the ... more
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. ; The change in temperature going from to is... more
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; The change in temperature going from to is .... more
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Hence the time taken is 13.3 million years ; Let ... more
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During the first 8 hours the temperature ... more
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; Let the power received by the collector area be... more
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Hence the final temperature is .Since the iron ... more
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Metal is a good conductor so it absorbs the heat ... more
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Feather bed is a bad conductor of heat and ... more
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No ; Fur coat is an insulator so it will neither ... more
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Water is a better conductor of heat than air. ; ... more
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When their temperature equals the temperature of ... more
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No.Heat energy always flows from high temperature ... more
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The material fiberglass has trapped air inside ... more
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Wood is a poor conductor of heat, so it does not ... more
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Gravestone conducts heat from the ground and hence... more
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Material G has higher surface area than material M... more
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Wood has low conductivity even if its hot. Wood is... more
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Yes, wood in the form of coal has low conductivity... more
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Yes.Yes.It is the temperature difference that ... more
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Since there is a temperature difference between ... more
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Temperature is the indirect measure of the kinetic... more
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The increase in temperature for a given amount of ... more
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HydrogenSince temperature is the average measure ... more
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Argon containing container.Since temperature is ... more
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U-238Diffusion process will be faster for U-235 ; ... more
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U-235 ; Since the temperature is the average ... more
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Room at lower temperature. ; Higher the ... more
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Smoke near the flame has a very high temperature ... more
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Due to less convection at the bottom compared to ... more
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The evacuated chamber is free from influence of ... more
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The faster moving molecules move upward until the ... more
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High specific heat capacity of water causes the ... more
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NoHeating imparts kinetic energy to the molecules ... more
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No ; Increased air speed causes increased rate of ... more
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Upward during winterDownward during summer ; ... more
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Since the compressed air and water mixture expands... more
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Radiation ; Radiation is a mode of heat transfer ... more
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Good emitters are also good absorbers so at room ... more
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Because the emitted electromagnetic waves do not ... more
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No.If an object is an excellent emitter but a poor... more
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A good reflector is a poor radiator and a poor ... more
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At the earth's surface heat is distributed into ... more
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Air being the poor conductor is unable to heat the... more
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The ground and grass in the park radiate energy ... more
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White colour reflects the light so there is very ... more
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Black coat ; Black color is the good absorber so ... more
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Night will be very cold and day will be very hot... more
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The roof gets hotter than the wall because the sun... more
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Rod conducts heat from one end to another by the ... more
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Copper or aluminium is more conductive than the ... more
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Aluminium foils are a good reflector and therefore... more
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Arctic iglooThis is because conduction of ice is ... more
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Friend is right. Temperature is the indirect ... more
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DisagreeNitrogen is heavier than hydrogen ... more
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Because all molecules are not of the same mass.... more
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There are parts of the atmosphere where the heated... more
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Since the helium exists in atomic form so its mass... more
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NoNewton's law of cooling is proportional to the ... more
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The cream should be added right away. ; The hot ... more
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Turn it off altogether ; Since the loss of heat to... more
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Turn it off altogether ; Since the load on the ... more
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The atmosphere is able to trap only the long ... more
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Photovoltaic cell converts light energy into ... more
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Since the power received over equals , therefore ... more
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It is impossible to change one thing without an ... more
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Clearing of forest and burning the fossil fuels ... more
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Population growth leads to the increase in the ... more