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No, it has nothing to do with that. The element with the greatest mass to charge ratio has the lowest speed.
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Physics: Post your doubts here!
- Thread starter XPFMember
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No, it has nothing to do with that. The element with the greatest mass to charge ratio has the lowest speed.
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Power equals to the square of current multiplied by the resistance. Use this formula to work out the ratio.
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I DID BUT IT DOESN'T WORK
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There is no such thing as a transverse sound wave. All sound waves are longitudinal.
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CAN ANYONE ANSWER PLZZZZZZ
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When the temperature is reduced, the resistance of the thermistor increases. Therefore, a larger proportion of the emf will flow across the thermistor and the voltmeter reading will increase.
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When finding between Y and Z, the other two would be in series and in parallel with the 5 Ω one.
1/2R+1/5=1/2.5.
R=2.5 Ω
Now 5 Ω and of the 2.5 Ω resistors will be in series and these will be in parallel to the other 2.5 Ω resistor when calculating between X and Y. Calculate to get 1.9 Ω.
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Same steel means same Young Modulus. The difference will be in extension.
Momentum before collision: 8+4=12
Velocity after collision: 12/6=2 ms^-1
KE= 0.5*6*2^2=12 J
None. They are just a mixture of properties of solids, liquids and gases.
can anyone help me with question no. 6. the answer is D
http://onlineexamhelp.com/wp-content/uploads/2014/02/9702_w13_qp_13.pdf
http://onlineexamhelp.com/wp-content/uploads/2014/02/9702_w13_qp_13.pdf
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Find the percentage uncertainty in diameter and multiply it by 3 as radius is cubed in the formula of volume. Add the percentage uncertainty in mass.
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Density = Mass/Volume
Volume of sphere = 4/3*pi*r3
Percentage uncertainty of diameter = 0.02/2.20*100 = 0.909%
Percentage uncertainty of mass = 0.005/0.506*100 = 0.988%
Since the diameter has to be halved to find the radius and then cubed, we multiply the uncertainty by 3.
Therefore, 3(0.909) + 0.988 = 3.7%
Thank u sooo much, you are such a big help
Thank you
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Could you please explain why?
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It's simple common sense. Imagine a particle with a large mass but a small charge. It has a bigger inertia, so it would have a lower speed.
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There's a formula for it too.
F=qE
ma=qE
a=qE/m
P.d. is same so E will be constant too.
Hence less q/m ratio means less acceleration.