phyzguy said:Oh, I assumed you were given the speed of sound in water at 1500 m/s, but it still looks good, since Wikipedia says the speed of sound in water is 1484 m/s (http://en.wikipedia.org/wiki/Speed_of_sound). What is your other question?
phyzguy said:It's conceptually the same as the first one. Treat it the same way. What is an echo?
phyzguy said:An echo means the sound went from the ship to the cliff, was reflected from the cliff and traveled back to the ship, where it was heard. Does this help?
phyzguy said:How far does the sound have to go to go from the ship to the cliff and back?
The equation for finding depth given time only is d = (1/2)gt^2, where d is the depth, g is the acceleration due to gravity, and t is the time.
This equation works by using the relationship between distance, time, and acceleration due to gravity. It assumes that there is no initial velocity and only the force of gravity acting on the object.
Yes, this equation can be used for any object that is falling freely due to the force of gravity. However, it does not take into account air resistance or other external forces.
The units for distance should be in meters (m), time should be in seconds (s), and acceleration due to gravity is typically measured in meters per second squared (m/s^2).
Yes, there are some limitations to using this equation. It assumes a constant acceleration due to gravity, neglects air resistance, and does not take into account initial velocity or other external forces. It is best used for objects falling near the Earth's surface.