Which option accurately describes an unbalanced force?

a. a 2-n force presses down on the cement block at the same time as a 1.5-n force presses up on the cement block.

b. the force of a house pressing down on its foundation of cement blocks is 3,000 n.

c. each cement block supports a 2-n force, but when the foundation is built in a staggered pattern, it can support 2,000 n.

d. three rows of cement blocks form a foundation for a house, and the house rests on this foundation.

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? a. the balloons both rise. the cold balloon is larger than the warm balloon. b. the balloons rise at the same rate. both balloons are the same size. c. the warm balloon expands and rises. the cold balloon shrinks and sinks. d. the cold balloon expands and rises. the warm balloon shrinks and sinks.

In an investigation that uses the scientific method, which step immediately follows making a hypothesis? o summarizing the results o asking a question o making observations designing an experiment mark this and retum save and exit next submit

Ineed to find the answer of this question because i dont understand it