Obtener el Momento en el punto A y en el Punto B del siguiente sistema de fuerzas F1 = 200N
F2 = 150N
F3 = 80N ángulo de 60
F4 = 100N angulo de 30
F5 = 300N
F6 = 250N

Athin, square metal plate measures 14 cm on each side and has emissivity of 0.60. the plate is heated to a temperature of 745°c. what is the rate at which the plate radiates energy ? the stefan-boltzmann constant is 5.67 × 10-8 w/(m2 ? k4). remember that the plate will radiate energy from both its top and bottom surfaces.

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.