Aplastic light pipe has an index of refraction of 1.45. for total internal reflection, what is the maximum angle of incidence to the wall of the pipe if the pipe is in (a) air? (b) water? be careful: the problem asks for the angle with the of the pipe. this is not the angle in snell's law. use =1.333 for the index of refraction of water.

We all use gps today, even if we don't drive yet. i bet you have been in the car with a parent and they have asked you to get out your phone to find a specific location. in your car, on the phone, you are using a very sophisticated technology. gps satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth. gps receivers take this information and use trilateration to calculate the user's exact location. essentially, the gps receiver compares the time a signal was transmitted by a satellite with the time it was received. the time difference tells the gps receiver how far away the satellite is. now, with distance measurements from a few more satellites, the receiver can determine the user's position and display it on the unit's electronic map. what type of signal is utilized by the gps satellite?

Amodel rocket with a mass of 0.212 kg is launched into the air with an initial speed of 84 m/s. how much kinetic energy will the rocket have at a height of 214 m? assume there is no wind resistance. 634 j 303 j

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?