Observe some of the phenomena around your home. look for something that you can’t explain right away, but that you could test with an experiment. then, design an experiment that you could conduct at home. make sure to identify the independent, dependent, and controlled variables. you should also write your own hypothesis. you don’t need to perform the experiment, just identify the variables and write hypothesis

Acup of coffee sits on the dashboard of an automobile. the car goes around a sharp curve. even though you hold the cup still, coffee still splashes out. this can best be explained due to a) density. b) friction. c) gravity. d) inertia.

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?