Wheels emit sound waves with a wavelength of 30m what is the frequency of their calls? The speed of sound in water is 1500 m/s

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?