Scientists in a lab are working with two different samples of the element mercury. they know that the different samples are different isotopes.
which property of the isotopes must be different?
a the atomic number
b the electric charge
c the element name
d the mass number

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward