Precious throws a stone into a pond and watches as the transverse waves are formed in the water. The waves have a wavelength of 5cm and an amplitude of 0,4cm. She notices that three full waves pass a rock in 1,5s. Determine the frequency of the water wave?

On mars a rock falls an unknown vertical distance from a resting position and lands in a crater. if it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? mars' surface gravity is 3.8 m/s2. a. 9.5 m b. 11.9 m c. 15.2 m d. 23.8 m

Why do some scientists and archeologists think that volta was not the first person to build a battery

Mary starts from her house, walks 80 meters south, and stops to chat with her aunt on the sidewalk. after chatting for a few minutes, she walks 125 meters to the west to meet a friend and then walks 45 meters north with her friend to a cafe for lunch. overall, she takes 10 minutes to do all this. what is mary’s average speed?