Un bloque de mA = 5,00 kg colocado en reposo sobre una mesa rugosa con coeficiente de rozamiento cinético 0,200, inclinada 30,0° respecto de la horizontal, está conectado a un cable cuya tensión es de 60,0 N, que pasa por una polea sin fricción y luego se fija a un bloque de mB como se muestra en la figura. Determine el trabajo realizado por la tensión que actúa sobre el bloque B, cuando recorrer los 2,50 m.

Asynthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. how is the standard deviation of the sample mean changed when the sample size is increased from n equals 8 to n equals 47

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg

Why do different substances have diffrent properties