Dalton was one of the first scientists to experimentally prove that
a. the nucleus and the electron have different electrical charges.
b. most of the atom is made of "empty space".
c. the chemical and physical properties of an element correlate with its mass and size.
d. the atom is composed of smaller pieces.

Ahorizontal wire is tied to supports at each end and vibrates in its second-overtone standing wave. the tension in the wire is 5.00 n, and the node-to-node distance in the standing wave is 6.28 cm. (a) what is the length of the wire? (b) a point at an anti- node of the standing wave on the wire travels from its maximum upward displacement to its maximum downward displacement in 8.40 ms. what is the wire's mass?

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter

Should we celebrate the voyages of zheng he mini q answer key