The first stage of erikson's psychosocial theory involves an infant's need to do what?
a. develop a basic sense of trust.
b. explore and manipulate objects.
c. initiate intellectual or motor tasks.
d. receive food necessary for survival.

In the first law of thermodynamics, triangle e=q-w, what does q stand for

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?

First answer marked as brainiest which is the correct equation describing the first law of thermodynamics? a) when the internal energy of a system changes, it equals the amount of heat added plus the work done. b) when work is done by the piston, it is equal to the heat added plus the change in internal energy of the system. c) when heat is added to the system, it is equal to the amount of work done by the piston plus the change in internal energy of the system.