Which of these are found in experimental investigations, but not in descriptive investigations? Check all that apply. a question
a hypothesis
variables
a control group
a procedure
a conclusion

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added

Consider the story you just read. all but one of the choices below indicate that something is living.