Vectores
1. al realizar un recorrido por el campo, un excursionista realiza los desplazamientos siguientes: (120 m, 38° no), (135 m, 40° ne) y 143 m, 35° se). haciendo uso del método de solución numérica, determina la posición final del excursionista, encontrando su desplazamiento y dirección.

To travel at constant speed, a car engine provides 24kw of useful power. the driving force on the car is 600n. at what speed does it travel?

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.