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

Imagine you work as a consultant, and your daily job involves listening to the constructive criticism of others. as part of your job, you must listen to opposing viewpoints to make important decisions. in this activity, you are a consulting dam engineer. you must make a decision about four different dams; should they be repaired, taken down, or left alone? you will listen to contrasting opinions about what should be done with the dams before you make the final decision. as the consulting dam engineer, what do you decide to do with this dam? explain your reasoning. by making your decision, did you support the opinions of the mayor and/or the dam safety official? why or why not? (site 1)

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?

Which composition of water moves to begin a deepwater current?