When you and a friend move a couch to another room you exert a force of 75 n over 5m how much work will you do

Bone-strengthening physical activity done increases bone-mineral content and bone density in youth.

An ideal spring has a spring constant (force constant) of 2500 n/m, is stretched 4.0 cm, how much elastic potential energy does it possess? (a) 3j (b) 0.00j (c) 1j (d) 2j (e) 4j

How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8