Athin, horizontal, 18-cm-diameter copper plate is charged to -3.8 nc. assume that the electrons are uniformly distributed on the surface. part a) what is the strength of the electric field 0.1 mm above the center of the top surface of the plate? express your answer to two significant figures and include the appropriate units. part b) what is the strength of the electric field 0.1 mm below the center of the bottom surface of the plate? express your answer to two significant figures and include the appropriate units.

If you mix chlorine lithium in nickel together which two elements would be the most reactive

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 act of moving from one place to another. a. locomotor b. aerobic c. stationary d. static