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CBSE Class 12-science Answered

Regarding 2nd law of thermodynamics
Asked by | 22 Jun, 2008, 06:18: PM
answered-by-expert Expert Answer

when the window of the car is left open light travels through the glass of the window and goes inside the car and produces heat.The solar energy from the near-IR and IR region of the solar spectrum are responsiblefor this heat build-up.

Answered by | 24 Jun, 2008, 12:04: PM

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CBSE 12-science - Physics
explain this concept
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Asked by panneer1766 | 24 Apr, 2024, 01:52: PM
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CBSE 12-science - Physics
A dumbbell consists of two masses A and B each of mass m joined by a light rod of length l with mass B attached to a suspension point O by a light rod of length l as shown in figure. Find the minimum required speed with which mass A to be projected horizontally so that the system completes the vertical circular motion.
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Asked by artabandhusahu85 | 24 Apr, 2024, 12:07: PM
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CBSE 12-science - Physics
What is charge?
Asked by niharvijayvargiya5 | 23 Apr, 2024, 06:40: PM
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CBSE 12-science - Physics
please resolve with good explanation
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Asked by kulhariabhijeet | 21 Apr, 2024, 02:39: PM
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CBSE 12-science - Physics
what are ghost particles please answer how is that not able to interact with other subatomic particles ..?is that faster than photons?
Asked by mohapatraswetalina88 | 21 Apr, 2024, 12:18: PM
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CBSE 12-science - Physics
if breakdown voltage of each capacitor is 40v ,then maximum applied voltage Vmax will be
Asked by aishaisha091098 | 19 Apr, 2024, 04:54: PM
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CBSE 12-science - Physics
explain
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Asked by ranadeb8090 | 19 Apr, 2024, 03:32: PM
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CBSE 12-science - Physics
solve option e
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Asked by dasrituparna1999 | 13 Apr, 2024, 06:56: AM
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CBSE 12-science - Physics
The number of moles in an elemental sample is just the ratio of the mass m to atomic mass 4. n= A The number of protons N, in an elemental sample is Z (atomic number) times the number of moles of Avogadro's number NA N=ZnN P A Copper has an atomic mass of 63.5 g/mole and 29 protons per atom. If such an atom were neutral, then it would have as many protons as electrons. If you remove electrons from a neutral state, then you get a net positive charge. Given a 54 gram ball of copper with a net charge of 2.2 µC, what fraction of the copper's electrons have been removed?
Asked by dasrituparna1999 | 12 Apr, 2024, 09:26: PM
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CBSE 12-science - Physics
which answer is correct and most appropriate with explanation
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Asked by mishrigupta19319 | 08 Apr, 2024, 06:28: PM
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