Una máquina puede modificar la magnitud, la dirección o ambas de una fuerza de entrada, (a) Dé varios ejemplos en los que se presenten ambos cambios, (b) Cite ejemplos en los que sólo se altere la magnitud de la fuerza de entrada, (c) Cite ejemplos en los que sólo se modifique la dirección.

From center station, a train departs every 30 minutes on the fast line and a train departs every 50 minutes on the state line. if two trains depart from center station at 8: 00 a.m., one on each of the two lines, what is the next time that two trains, one on each line, will depart at the same time?

An air-filled capacitor is formed from two long conducting cylindrical shells that are coaxial and have radii of 26 mm and 103 mm. the electric potential of the inner conductor with respect to the outer conductor is - 700 v (k = 1/4πε 0 = 8.99 × 109 n · m2/c2) the energy stored in a 1.0-m length of this capacitor is closest to

If a hiker that weighs 600 newtons climbs a 50 meter hill, how much gravitational potential energy has the hiker gained?