. Se tienen dos varillas, una de aluminio (∝=25 x 10^(-6) (°〖C)〗^(-1)) y otra de cobre (∝=16 x 10^(-6) (°C)^(-1)) de diferente longitud, tienen la misma área transversal, se le suministra a cada una cierta cantidad de calor hasta a que alcanzan la misma temperatura e igual longitud. La varilla de cobre debe ser

Madison pushes with a 210-n horizontal force on a 24-kg crate of coffee resting on a warehouse floor. the force of friction on the crate is 74 n. what is the acceleration?

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.

How long will it take a car traveling of a constant speed of 45m/s to cover the distance of a 2.5km?