Two boxes, m2 = 10 kg and m1 =15 kg, are attached to each other by a lightweight string and are pulled by another string attached to m1 . If the string pulling the box in the front has a force
of 500 N. what is the acceleration of m1 assuming the strings are kept taut? Neglect resistance
forces.
50 m/s/s
33.3 m/s/s
20 m/s/s
10 m/s/s

Air is held within a frictionless piston-cylinder container, which is oriented vertically. the mass of the piston is 0.45 kg and the cross-sectional area is 0.0030 m2. initially (state 1) the pressure of the gas is sufficient to support the weight of the piston as well as the force exerted by the atmospheric pressure ( 101.32 kpa). the volume occupied by the air within the cylinder in state 1 is 1.00 liter. one end of a spring (with spring constant k = 1000 n/m) is attached to the top of the piston, while the other end of the spring is attached to a stage that can move vertically. initially the spring is undeflected and therefore exerts no force. then the stage is then moved quasistatically downward a distance of 10.0 cm, at which point the system reaches state 2. the piston-cylinder is not insulated; rather it remains in diathermal contact with the surroundings, which are at a constant temperature of 300 k. what is the change of pressure within the container?

The dot diagram represents the motion of the motorcycle as it moves from left to right

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