What describes how sliding friction affects pushing a cereal box across a tabletop?

Friction is defined as the force that opposes any applied force. Sliding friction affects pushing a cereal box in the sense that you have keep a constant applied force greater than the frictional force on the box to keep it moving. If you stop pushing, the box will stop due to the frictional friction. This is why a box won't keep moving across the table forever after you push it only a brief moment.

Except hold on to his or her beliefs even if there is no evidence for those beliefs.

The truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey