What is the velocity of a wave with a frequency of 1,000,000 hertz and a wavelength of 10,000 meters?

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.

What are the north and south poles of a solenoid change with?