Which of these experiments would make use of qualitative data? a. a study of different shapes to compare rolling friction b. a study on the effects on sunlight on growth rate of plants c. a study of different surfaces to compare ability to repel water d. a study of change in a freezing point of water when salt is added

You carry a 7.0-kg bag of groceries 1.2 m above the ground at constant speed across a 2.7m room. how much work do you do on the bag in the process? (a) 157j (b) 0.00j (c) 185j (d) 82j

Aphysical change is a change in the size, shape,, or stafe of matter true or false

An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above