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CBSE Class 10 Answered

what do you mean by differentiating equation? how did you got 2dv/dt=-7
Asked by apurva151 | 22 Aug, 2015, 07:39: PM
answered-by-expert Expert Answer
begin mathsize 12px style Acceleration equals straight a equals dv over dt equals dv over dx cross times dx over dt That space is comma space straight a equals straight v dv over dx space minus negative negative left parenthesis Equation space 1 right parenthesis We space have comma space straight v squared equals 180 minus 7 straight x Differentiating space straight w. straight r. straight t space straight x comma space we space get 2 straight v dv over dt equals negative 7 dx over dx straight v dv over dt equals fraction numerator negative 7 over denominator 2 end fraction From space equation space left parenthesis 1 right parenthesis comma space we space get space straight a equals straight v dv over dt equals fraction numerator negative 7 over denominator 2 end fraction equals negative 3.5 space straight m divided by straight s squared end style 
Answered by Yashvanti Jain | 20 Dec, 2017, 08:01: PM

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CBSE 10 - Physics
write ohm's law for electric circuit. Also write the necessary formula for this .
Asked by khajannirwan | 27 Feb, 2024, 10:20: PM
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CBSE 10 - Physics
find Req
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CBSE 10 - Physics
Will a current carrying conductor produce an electric field?
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CBSE 10 - Physics
resistivity
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CBSE 10 - Physics
find the new resistance of wire length l area of cross section A if it is folded 4 times
Asked by nandhikasugumar | 05 Oct, 2023, 04:01: PM
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CBSE 10 - Physics
finding the net resistance  
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Asked by daniya062008 | 02 Oct, 2023, 08:25: PM
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CBSE 10 - Physics
the resistance of a wire of 0.01 cm radius is 10 ohm.if the resistivity of the material of the wire is 50*10^-8 ohm meter find the length of the wire
Asked by prassanna.j | 03 Sep, 2023, 12:28: PM
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CBSE 10 - Physics
Nichrome wire of length L and radius R has resistance 10 ohm.How would the resistance of the wire change when: only diameter of the wire is doubled?Justify 
Asked by prassanna.j | 03 Sep, 2023, 12:21: PM
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CBSE 10 - Physics
The resistance of a resistor is kept constant and the potential difference across its two ends is decreased to half of its former value.State the change that will occur in the current through it.
Asked by prassanna.j | 03 Sep, 2023, 12:13: PM
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CBSE 10 - Physics
A given length of a wire is doubled of itself and this process is repeated once again.By what factor does the resistance of the wire changes?
Asked by prassanna.j | 03 Sep, 2023, 12:11: PM
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