Neglecting the weight of the bar of length L, pivoted at its center and balanced with...
11. How high should an object go so that its potential energy
gain is the same as its kinetic energy when it was moving at 20
m/s?
12. A 2000 kg carriage moves with an initial velocity of 25.0
m/s on horizontal road slides to a stop at a distance of 60.0 M.
(a) Find the work done by the kinetic friction force in the
carriage. (b) Determine the kinetic friction coefficient between
the wheels and the road. Ans: (a)...
Two metal rods, vertically placed and separated, are joined at
the top.
a distance of l = 50cm. The whole, whose resistance is
considered contempt-
It is placed within a uniform magnetic field of flow density B
= 0.01kT perpendicular to the plane defined by the rods. By them,
it slides downwards with constant speed of v = 1jm / s, without
friction and without interrupting the contact, a bar AB whose mass
is m = 1g. Determine the resistance...
The end of a uniform bar of length L = 8 m, weight is supported by a cable which makes an angle θ = 37 ° with the bar. The other end rests against the wall, where it is held by friction, as shown in the figure. The coefficient of static friction between the wall and the bar is μe = 0.50. Determine the minimum distance x from point A where an additional weight (the same as the weight of...
The figure shows a long, nonconducting, massless rod of length L, pivoted at its center and balanced with a block of weight W at a distance x from the left end. At the left and right ends of the rod are attached small conducting spheres with positive charges q and 2q, respectively. A distance h directly beneath each of these spheres is a fixed sphere with positive charge Q. (a) Find equation for the distance x when the rod is...
Nombre . Responde las siguientes preguntas A) SI P(A 6 B)-1/3 P(B)- 1/4 y P(Ay B)-1/5, halle P(A) B ) Cual es la probabilidad de lanzar un par de dados y que la suma de los resultados de los dos dados sea 7 C ) Una prueba de selección múltiple tiene cinco posibles respuestas de las cuales una es correcta, si 13 estudiantes eligen las respuestas al azar. Cuaál es la probabilidad de que los 13 escojan la respuesta correcta?...