por favor ayúdenme necesito resolver esto por favor 2. A patineta de 5,6kg va por una vía recta y se le aplica una fuerza de 80N durante 23s, en la misma dirección del movimiento, luego de lo cual adquiere una velocidad de 20km/h. Determinar: ■La aceleración de la patineta ■Qué velocidad tenía la patineta antes de ser aplicada la fuerza. ■El espacio recorrido en los 23s.

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.

A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.