A submarine is emitting a sound wave underwater. The sound wave has a frequency of 500 Hz and a wavelength of 3 meters. The sound wave the submarine emits reflects off a ship and returns to the submarine. If it takes the sound wave 5 seconds to return to the submarine how far away is the ship?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates

Blood pressure the total amount of blood the heart pumps in one minute 2. cardiac output the number of times your heart beats in a minute 3. dilate the amount of blood that the heart can pump in a single beat 4. heart rate the force exerted on the walls of the blood vessels by the blood that moves through them 5. stroke volume to widen or get larger in size