19 What are the main practices involved in keeping of animals or animal husbandry? A student weighs 30 kg. Suppose his body is entirely made up of electrons. How many electrons are there in his/her body. (Mass of an electron is 9.1 x 10- Kg) OR ta How would you confirm that a colorless liquid given to you is pure water?

If the entire mass of the body (45.5 kg) is assumed to be made up of electrons, how many electrons are present in mass of an electron is 9.1 xx 10^(-31) kg ?

The mass of an electron is 9.11xx10^(-31)kg . How many elecrons would make 1kg?

If mass of an electron is 9.11xx10^(-31) kg then how many electrons would weight in 1 mg?

How many electrons (mass 9.1xx10^-31 kg) would balance one Proton (mass 1.67xx10^-27 kg)

If mass of an electron is 9.11xxx10^(-31) kg, how many electrons would weigh in 1 mg? Given data: Mass of an electron =9.11xx10^(-31)kg =9.11xx10^(-31) kg is the mass of 1 electron

The total number of electrons in the human body is typically in the order of 10^(28) . Suppose due to some reason you and your friend lost 1% of this number of electrons. Calculate the electrostatic force between you and your friend separated at a distance of 1m. Compare this with your weight . Assume mass of each person is 60 kg and use point charge approximation.

A monoenergetic (18keV) electron beam initially in the horizontal direction is subjected to a horizontal magnetic field of 0*40G normal to the initial direction. Estimate the up or down deflection of the beam over a distance of 30cm . Given mass of electron 9.11xx10^(-31)kg and charge on electron =1*6xx10^(-19)C . [Note. Data in this exercise are so chosen that the answer will give you an idea of the effect of earth's magnetic field on the motion of electron beam from electron gun to the screen in a T.V. set].