What would be the effect of decreasing the pressure on this system when it is in equilibrium? 2H2 + O2 + 2H20 O A. All of the molecules would react more slowly. B. Hy would react to produce H, and O2 more quickly. C. The system would remain in equilibrium. D. H2 and Oz would react to produce H2O more quickly.

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.

In an experiment, how can i change human errors? be specific.

1700 j of energy is lost from 0.14 kg object , the temperature decreases from 50°c to 45°c what is the specific heat of this object, amd what is the material ?