Which of the following statements are true consequences of the principle of superposition?
(i) the net electric force on a charge, q_0q 0 , due to other nearby charges is the vector sum of the individual electric forces on that charge.
(ii) the individual forces on a charge, q_0q 0 , can be summed by vector addition in any sequential order to find the net force on charge q_0q 0 .
(iii) a charge, q_0q 0 , placed at the exact midpoint between two identical charges will experience zero net force due to those charges.
(iv) the net force on a charge, q_0q 0 due to other nearby charges is exactly equal to the force on charge q_0q 0 due to the charge nearest to it, and is not affected at all by any of other charges nearby.

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?

What occurs during a combustion reaction

This punnett square shows the cross between two pants. one parent has round seeds (rr). and the other parent has wrinkled seeds (rr) which best describes their offspring as shown in this cross?