A light hollow plactic ball and a solid steel ball of the same size are released from the cliff of a hill. Will both balls reach the foothill at the same time. Explain your answer

Astring that is fixed at both ends has a length of 1.05 m. when the string vibrates at a frequency of 91.0 hz, a standing wave with five loops is formed. (a) what is the wavelength of the waves that travel on the string? (b) what is the speed of the waves? (c) what is the fundamental frequency of the string?

Lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?

The heliocentric and the geocentric models of the solar system included these central principles