Apendulum is raised 1.5 cm and allowed to fall. if air resistance is negligible, how high will the pendulum rise on the other side?

It will rise to same height (1.5 cm) on the other side of the pendulum.

Explanation:

When the pendulum moves, its kinetic energy is maximum at its mean position and potential energy is zero. While at both ends potential energy is maximum and the kinetic energy is minimum that is zero.

The energy is conserved during the process. So, if the friction is neglected, then there must be no loss of energy and the pendulum must rise to the same height on the other hand, as well. That is 1.5 cm.

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =

magnets not strong enough

explanation: