La velocidad limite es una velocidad constante que alcanza un paracaidista cuando desciende , si esta velocidad limite es 18 km/h y la velocidad limite lo obtiene cuando la persona se encuentra a 80m , determine el tiempo que demora en llegar a tierra desde que obtiene su velocidad limite .Considere un movimiento rectilineo del paracaidista

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.

If you place a magnet under a clear dish, and sprinkle iron fillings over it, above what part of the magnet will most of the fillings gather

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.