PLEASE HELP How many significant digits are in each measurement?

130000 dg
35.002 mm
3.7 x 10-3 L
1000 s

Astudent looks at ocean waves coming into the beach. an ocean wave with more energy will a) have a greater height. b) have a greater period. c) travel toward the beach faster. d) strike the beach with greater frequency.

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

The plum pudding model of the atom states that ?