A ferry with a velocity of 6.55 m/s travels from one side of a 945 m wide river to the other side at a point directly across. When a current is flowing down the river, the ferry's captain directs the
boat at an angle up river so that the ferry arrives at the correct landing point. If the speed of the
river water is 4.7 m/s, how long does the trip take?

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?

Gabby calls her cousin who lives in a different state and tells her to turn her radio to channel 98.7 so they can listen to their favorite song that is playing. her cousin turns her radio to 98.7, but does not hear the same song gabby hears. which most likely explains why?