An ultrasound system can produce images of body structures because sound waves

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?

Which explanation most accurately describes convection within the ocean