Scientists have sometimes analyzed how substances respond to light by regarding their atoms as two oppositely charged particles with a force between them that acts like a spring. this is an example of: a.) inferring b.) predicting c.) classifying d.) making models

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

Energy flows from the producer level to the level. is called

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc