If you stand up in a big room and echo, your voice will echo
from the walls. As long as the room is empty. Since
the speed of sound is constant, depending on air density, the more humid the
air the faster and farther sound travels. The
speed of sound is constant, you could measure the time it takes for your voice
to echo off the walls. The same thing happens with Doppler radar, but it’s not voice,
it has higher frequency signals.<span> </span>
The answer is A. the fields lines never cross, if you bring another magnet near it, the lines work just compress
Answer:
B. holding a coffee mug
Explanation:
Something must move a distance for work to be done.
Answer:
inelastic, since the girl moves in the same direction as the thrown ball
Explanation:
yess this ok
UwU
