Answer:
c. equal to 760 mm
Explanation:
We are told that another mercury barometer is used that has a tube of larger diameter. This means a larger area and the weight of the liquid in the tube will have increased since volume = area × height. Also, due to the larger area, the net upward force
on the mercury will have also increased by the
same amount because force = area × pressure. Therefore, as long as the pressure remains the same, the height of
the mercury will also remain the same.
Thus the height of the mercury = 760 mm
Answer:
Since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. So as the mass of either object increases, the force of gravitational attraction between them also increases.
Answer is B since electric field lines flow from negative to positive not from positive to positive.
