Dalton proposed the first atomic model. which of these statements accurately reflected his thinking at that time? . . a.. atoms are all alike.. . b.. atoms are solid balls.. . c.. smaller particles are found inside atoms.. . d.. atoms can be divided into smaller parts.

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600