1) a) Find a plane model for the connected sum of two tori: T#T = 2 T. b) Draw an arbitrary closed curve on the torus that does not bound a disk on the torus. Depict this curve on the plane model of the torus.
c) Draw a correspondent closed curve on 2 T. Depict this curve on the plane model of 2 T.
2) Does the surface n T have the fixed point property?

Ajet plane has a sound level of 120 db at a distance of 60 m. what is the q23. sound level at a distance of 6.0 km? (60)2 (6000)? om solution 80db db, hint: 16x assume ultrasound waves travel through the body of an animal at 1540 q24. m/s. if a 30,000 hz signal were reflected off a portion of a heart which was moving toward the source at 3 m/s, what frequency signal would return to the stationary source? solution 30.117hz

The least penetrating form of radiation is

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25º, b) el tiempo que el balón permanece en el aire.