Determine the electrical force of attraction between two balloons with separate charges of -4.5 x 10^-6 C and +3.0 x 10^-8 6 when separated a distance of 0.82
m.

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.

This is the number of complete movements of a wave per second.

In a classical model of the hydrogen atom, the electron moves around the proton in a circular orbit of radius 0.053 nm. what is the electron's orbital frequency? what is the effective current of the electron?