1) which of the following would not be considered a mechanical wave? (1 point) a) surface wave on the ocean b) radio wave transmitted from a satellite c) standing wave on a guitar string d) sound wave in a pipe organ2) which of the following would be considered a medium? (1 point) a) a block of wood b) a pool of water c) a container of carbon dioxide d) all of the above3)a wave of wavelength 42 cm travels with frequency 23 hz. what is the speed of the wave? (1 point) a) 0.01 m/s b) 54.7 m/s c) 9.66 m/s d) 96.6 m/s4)a 700.0-cm rope under a tension of 65.0 n is set into oscillation. the mass density of the rope is 90.0 g/cm. what is the frequency of the second overtone (n = 3)? (1 point) a) 0.018 hz b) 1.8 hz c) 0.18 hz d) 0.0018 hz

Use the library or internet to research each planet. make a chart comparing the following: approximate surface temperature relative surface gravity compared to earth atmospheric gases water in any form: solid, gas, or liquid when you have completed your chart, use the information you have collected to answer the following questions: which is the hottest planet? which is the coldest planet? which planet's temperature is closest to that of earth? (note: water boils at 100°c/212°f. water freezes at 0°c/32°f) which planet has the greatest gravitational attraction? which planet has the least gravitational attraction? which planet's gravitational pull is closest to that of earth? do any of the planets have oxygen in their atmosphere? which planet's atmosphere most resembles that of earth? do any of the planets have flowing water? which planet's water resources (solid, gas, or liquid) might be close to the amount on earth? which planet most resembles earth in terms of all of the factors: temperature, gravity, atmosphere, and water? if earth became an uninhabitable planet, which planet do you think would be the next best to live on? explain your answer.