Which is smaller - 1 PB or 1,000 TB? * 1 PB
1,000 TB
O They're equal

PLEASE HELP 10points

1. a

2. a

3. d

explanation:

only #2 represents an object at rest on a table.

in #1, there is no normal force due to the table; the object is accelerating downward.

in #3, the vertical forces are not balanced; the object is accelerating downward.

in #4, neither the vertical nor the horizontal forces are balanced. the object is accelerating upwards and to the right.