Q1. An object hangs from a spring balance. The balance indicates 40 N in air and 30 N when the object is submerged in water. What does the balance indicate while the object is submersed in a liquid with a density that is half that of water?
Q2. The electric field in a region of space is oriented along the positive y axis. A circle of radius R is placed in xz-plane. The flux of the electric field by this circle is Φ. The same electric field passing through a second circle of radius 2R parallel to xz-plane would result in a flux equal to.