A rubber rod is rubbed with a soft fur towel in order to...

A rubber rod is rubbed with a soft fur towel in order to clean it. In the process, the rod acquires a charge of -3.8 x10$^{-9}$ C. a) What is the charge of the soft fur towel? Number x10$^{-9}$ C b) How much mass has been transferred to the rod? Number x10$^{-20}$ kg

Transcript

00:01 Part a of the question rubber rod is rubbed with the fur and acquires charge q equals to minus 4 .8 multiplied by 10 to the power minus 9 coulough.

00:09 Okay, so the charge on the fur will be equals to plus 4 .8 multiplied by 10 to the power minus 19 koolof, which is equal and opposite of the magnitude but different in the sign.

00:21 Because from the properties of charge, we know that a body loses the electrons and another body which is rubbed with the the rubbed with another body will gain the charges okay so the charge on the fur is equals to 4 into 4 .8 into 10 to the power minus 9 column in the positive sign okay so now for the part b of the problem so the charge is positive here okay so for the part b of the problem in which we have to determine the charge on the silk sorry the charge on the fur so the charge on the fur is equal to plus 4 .8 multiplied by 10 to the power minus 9 column and we have to determine also the how much mass is transferred to or from the rod so first of all we will calculate the number of transferred electrons so q will be equals to n multiplied by e so q is equal to 4 .8 multiple by 10 to the power minus 9 and n is the number of transferred electrons and e is charge on one electron which is 1 .6 into 10 to the minus 19 cologne so from here of solving we get n equals to 3 .0 multiplied by 10 to the power 9 10 to the power 9 electrons okay so this is the number of electrons transferred okay so now we can calculate the mass transferred so as the rod has as the roar has negative charge so the charge is transferred to the rod so the charge is transferred to the rod so mass will also be be transferred to the raw.

02:03 So mass is transferred to the raw.

02:06 Okay, transferred to the raw.

02:10 So the mass transferred will be equal to m...

Question

A rubber rod is rubbed with a soft fur towel in order to clean it. In the process, the rod acquires a charge of -3.8 x10$^{-9}$ C. a) What is the charge of the soft fur towel? Number x10$^{-9}$ C b) How much mass has been transferred to the rod? Number x10$^{-20}$ kg

Please give Ace some feedback