Identify which stage marks the birth of a star

What does the amount of inertia in an object depend on

Your mass is 65 kg. you stand on a bathroom scale in an elevator on earth. (a) what force would the scale exert when the elevator moves up at a constant speed?

Two waves equal amplitudes meet other result in a wave with zero amplitudes. Which phenomenon

Who is most likely to benefit from use of lithium?

The following voltage drops are measured across three resistors in series: 5.5 V. 8.2 V. and 12,3 V. What is the value of the source voltage to which these resistors arc connected?

Which best describes the differences between how Ptolemy and Copernicus described the solar system? A. Ptolemy saw the sun at the center of the solar system, while Copernicus saw the earth as the center. B.

A man is standing on the shore of a beach, up to his knees in water. Every 5 seconds a wave breaks on him. What is the period of the wave? A. 12 waves per minute B. 5 hertz C. 5 seconds D. 0.2 hertz

A beam of light with a wavelength 760 nm in air travels in water. The index of refraction of water is 1.33. What is the wavelength in water?

45. An object with a mass of 25 kg accelerates east at a rate of 7 m/s? What fiet force is acting on the object?

The speedometer in your car reads 55mi/h this represents ___ of the car