Expresar el vector A = ( -18; 25 ) mB = ( 50 km ; SO ) C = ( 23 m/s ; 1520 ) D = ( 12 i +20j ) km E = 65 km/h ( 0,376 I + mj) en los diferentes sistemas de coordenadas: a. Coordenadas polares b. En función de sus vectores base c. Coordenadas geográficas d. En función de su módulo y unitario

Which device uses ac current to operate?

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s

What are the applications of electromagnetic waves