On placing an inverted tumbler over a burning candle, why does the flame extinguish after some time?
Q: If you vigorously shake a can of chicken broth back and forth for more than a minute, will the…
A: Yes increases.
Q: Why more viscous oil is used in motor car in summer than in winter?
A: More viscous oil is used in motor cars in summer than in winter because in summer, due to the rise…
Q: What happens when an object at a high temperature touches an object at lower temperature?
A:
Q: Why is it possible to hold a lighted match stick until the flame burns quite close to the fingers?
A: The match stick is made up of wood which is the bad conductor of heat. When the lighted match stick…
Q: Why does the pressure of gas enclosed in a rigid container increase as the temperature increases?
A: Increase in temperature means increase in the kinetic energy of the particles. And increase in…
Q: burning candle is carried away by (choose one) conduction, convection, or radiation
A: Most of the heat generated by a burning candle is carried by radiation.
Q: Which of these is not a state of matter? Solid , liquid, plasma, or ice?
A: Solid, liquid ,plasma and ice are state of matter Because physical change can happen to matter but…
Q: When you open the door to an air conditioned room in the summer are you letting cold air out or hot…
A: When the door to an air conditioned room in the summer is opened. And we need to tell whether we…
Q: On a cold winter morning, why does the metal of a bike feel colder than the wood of a porch?
A: The thermal conductivity of the metal of a bike is higher when compared to that of the thermal…
Q: you may know, a black colored car hood can get hot enough in summer to fry an egg. If a white car…
A: we know that Darker paint colors, especially black, will absorb more of the heat from the sun and…
Q: In what way does the temperature of water at the bottom of a waterfall differ from the temperature…
A: The temperature of the water at the bottom will be greater than that at the top. This is because the…
Q: Why does the temperature of gas increase when it is suddenly compressed?
A: Temperature of gas increase when it is suddenly compressed because
Q: In a steady state, what happens to the temperature of each part of the rod?
A: In a steady-state, the temperature of each part of the rod is constant but not the same.
Q: Show how a change in ⁰C is equal to a change in K (Kelvin).
A:
Q: Why is heating a glass of water irreversible?
A: This is a problem regarding the qualitative argument for entropy. Entropy is a measure of the…
Q: The sparks from a sparkler have a temperature of around 2000°C. Why do they not bun your hand when…
A: The thermal energy of object depends on its temperature, mass and type of material.
Q: why a metal spoon left in a pot of boiling water gets hot so fast ?
A: In metals heat transfer takes place by conduction . In conduction heat transfer takes place by…
Q: Consider two cold canned drinks, one wrapped in a blanket and the other placed on a table in the…
A: When there is a thermal gradient the heat energy will flow from the higher temperature region to the…
Q: Explain why a firewalk er can step quickly without harm on red hot coals with bare feet.
A:
Q: Why does a two-story house that is roughly a cube suffer less heat loss than a rambling one-story…
A: For a given volume, a one-story house has less surface area than a two-story house. As we know rate…
Q: An astronaut has two objects that are identical in all respects, except that one is painted black…
A: Which of the two objects painted black and silver cools down at a faster rate.
Q: The zero kelvin is called absolute zero, why?
A: the zero kelvin temperaature or -273.15 degree celcius is known as absolute zero since the all the…
Q: Air is a bad conductor of heat , but still we donot feel warm without clothes, Why?
A:
Q: A submerged heater is used to keep an aquarium above room temperature. Where should the heater be…
A: Hot water has low density while cold water has high density .
Q: Discuss the motion of the bead according to the equation of motion q¨2 − ω2sin2α q = −g cos α as…
A: This problem deals with Newton's law of motion and its application for a bead rotating about an…
Q: Why does the balloon in a smaller container filled with hot water sink after it has been put in a…
A: Given: Why does the balloon in a smaller container filled with hot water sink after it has been put…
Q: Why is it incorrect to say that, when a hot object warms a cold one, the increase in temperature of…
A: To describe Why is it incorrect to say that, when a hot object warms a cold one, the increase in…
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