a dolphin emits a sonar chirp, and hears an echo from a fish 0.325 s later. if the speed of sound in the ocean is 1520 m/s, how far is the fish from the dolphin? (unit=m/s)

A. 10 kg hockey puck is at rest. It encounters a force of 20 N for 0.2 seconds that sets it in motion. Over the next 2 seconds it encounters 0.4 Newton's of resistance force. Finally it encounters a final force of 24 N for 0.

During a partial solar eclipse, where is the moon located? a. between the sun and venus b. in the penumbra d. between the umbra and penumbra

A measure of the force that moves charges though a conducting material is

The energy of a water wave is most closely related to its

In a compression wave, particles in the medium moveIn a compression wave, particles in the medium move a. perpendicular to the direction of the wave c. in the same direction as the wave b. opposite of the direction of the wave d.

What material are oil pipelines made from?

3/129 A 175-lb pole vaulter carrying a uniform 16-ft, 10-lb pole approaches the jump with a velocity v and manages to barely clear the bar set at a height of 18 ft. As he clears the bar, his velocity and that of the pole are essentially zero.

A few years ago, Serena Williams dived to hit a tennis ball right after it bounced off the ground. The ball bounced on the ground 10.3 m from the net, and after Serena hit the ball it flew over the 0.

A force of 1.25x103N is required to lift an object that is under the influence of an acceleration due to gravity of 7.86ft/sec2. What is the object's mass in kilograms?

Which of these events is an example of the Doppler shift? The amplitude of a wave on a string increases as the frequency decreases. The amplitude of sound from a tuning fork decreases due to damping.