Question1
You hold a brick at rest in your hand.
(a) How numerous forces act on the brick?
(b) Recognize these forces.
(c) Are these forces equivalent in magnitude and opposite in direction?
(d) Are these forces an action-reaction pair? Elucidate.
Question2
Discounting pressure of the atmosphere, if you swim twice as deep in water, how much more water pressure is exerted on your ears? If you swim in saltwater, will pressure be greater than in freshwater at the same depth? Why or why not give reason?
Question3
We can learn terrestrial planets up close by landing on them; however jobian planets have no surfaces to land on. Assume that you are in charge of planning a long-term mission to "float" in the atmosphere of a jovian planet. Explain technology you would use and how you would make sure survival for any people assigned to this mission.