In an ultrasound scan of a pregnant woman, the waves had a frequency of 3.0 MHz and a wavelength of 4.9 × 104 m. The waves took 1.12 × 104 s
to be reflected from the baby’s nose. How far was the nose from the ultrasound transducer?

How are momentum and impulse related? impulse is a whim to do something, while momentum keeps it going impulse is another name fore instantaneous momentum the impulse acting on and object is equal to the change of momentum it causes. the impulse that acts on and object is the momentum that results.

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

If a star is moving toward earth, it is