There are several exceptions to the Stock system rule of using Roman numerals in the name of a cation. Two of the most
common exceptions are zinc and silver. In compounds, zinc
always carries a 2+ charge and silver nearly always carries a 1+
charge. For that reason, the Stock system is typically not used
for compounds of zinc and silver.
What is the correct formula for silver fluoride?
a AgF2
b SiF2
C SiF
d AgF

North atlantic current or north atlantic drift is the answer

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant. 

Firstly, the water in the dams hold gravitational potential energy as they are above ground level. the gravitational potential energy is then transferred to kinetic energy as it falls, spinning the turbinethe turbine then spins the generator, which is a large magnet surrounded by metal coils. by doing this, the generator generates electricity. in this action, the energy transfer taken place is kinetic to electric energy