Which statement is most correct? A. Electric currents and magnets each exert a force.
B. Electric currents exert a force but magnets do not.
C. Neither an electric current nor a magnet exert a force.
D. Electric currents do not exert a force but magnets do exert a force.

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves