Europa, a satellite of jupiter, is believed to have a liquid ocean of water (with a possibility of life) beneath its icy surface. in planning a future mission to europa, what is the fastest that an astronaut with legs of length 0.67 m could walk on the surface of europa? europa is 3100 km in diameter and has a mass of 4.8×1022kg.

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)

Unpolarized light whose intensity is 1.19 w/ is incident on a polarizer. (a) what is the intensity of the light leaving the polarizer? (b) if the analyzer is set at an angle of = 41.0∘ with respect to the polarizer, what is the intensity of the light that reaches the photocell?

Explain earth's motion, using the terms "precession" and "rotation" in your answer.