What is the maximum weight it can lift

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Q. Why is you are not harmed with the contact of a charged metal ball, although its voltage may be very high? Is the reason similar to why you are not harmed by greater-than-10000 C sparks from the Fourth-of-July sparkler? Define your answer in terms of the energies that are involved.

Q. A 0.13 kg balloon is filled with helium (density = 0.179 kg/m3). If the balloon is a sphere with a radius of 4.50 m, what is the maximum weight it can lift?

Reference no: EM1382825

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