What effect does increasing the number of neutrons have on the paths of the alpha particles as they approach the central mass

What is the coefficient of kinetic friction μk between the block and the tabletop?

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same