When is mechanical energy NOT conserved? ANSWER ASAP WILL GIVE BRAINLIEST IF CORRECT A-When you are in outer space

B-When it is cold outside

C-When the electricity is turned off

D-When there is significant friction or air resistance or other force affecting on the object.

Two conductors, a and b, are each in the shape of a tetrahedron. but of different sizes. they are charged in the following manner: 1. tetrahedron a is charged from an electrostatic generator to charge q. 2. tetrahedron a is briefly touched to tetrahedron b. 3. steps 1 and 2 are repeated until the charge on tetrahedron b reaches a maximum value. if the charge on tetrahedron b was q/4 after the first time it touched tetrahedron a. what is the final charge qbmax on tetrahedron b?