Ascience fiction scenario: the earth is visited by (benevolent) aliens. they also happen to have eyes which are light sensitive in a range that coincides with the range where human eyes can see (so roughly between 380nm and 750nm). however, unlike we humans, the aliens have 16 different color receptor spread out over the visible spectrum, not just 3. one evening, alien p. xuthus watches the superbowl with his earth-friend steve on steve's brand new plasma tv. he asks steve: "look. i know you spent an awful lot of money on that tv, but the colors are all horribly wrong. they have nothing to do with what things really look like! how can you stand watching this? why don't you humans build tvs which make things appear in the colors they actually have? " steve, however, is confused. the colors look perfectly fine (in fact, positively awesome) to him. what is going on

An input force of 7 n is applied to a machine with a mechanical advantage of 1.75. what is the maximum the machine could lift? 12.25 n7n7.25 n26.2 n

Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide?   kg • what must the total momentum of the system be after the train cars collide?   kg •  

Your starship, the aimless wanderer, lands on the mysterious planet mongo. as chief scientist-engineer, you make the following measurements: a 2.50-kg stone thrown upward from the ground at 14.0 m/s returns to the ground in 5.70 s ; the circumference of mongo at the equator is 2.20×10^5 km ; and there is no appreciable atmosphere on mongo. (a) the starship commander, captain confusion, asks for the following information: what is the mass of mongo? (b) if the aimless wanderer goes into a circular orbit 2.20×10^4 km above the surface of mongo, how many hours will it take the ship to complete one orbit? (c) an unmanned spacecraft is in a circular orbit around the moon, observing the lunar surface from an altitude of 44.0 km . to the dismay of scientists on earth, an electrical fault causes an on-board thruster to fire, decreasing the speed of the spacecraft by 23.0 m/s . if nothing is done to correct its orbit, with what speed (in km/h) will the spacecraft crash into the lunar surface?