Aboy yells in a narrow valley. the sound reflects off of a boulder that is 80 m away. how long will it take to hear the echo if
the speed of a sound wave is 320 m/s?
(speed = distance
time )
0.25 seconds
0.50 seconds
2.0 seconds
4. lubeconds

How many hydrogen (h) atoms are in one molecule of sulfuric acid, h2so4? (1 points) 1 2 4 7

Astudent is working in the lab to determine how time affect impulse the student keeps the force the same in each row but changes impact the time some data is shown witch trial has the greatest a student is working in the lab to determine how time affect impulse the student keeps the fours the same in each row but change is the impact time some data shown witch trial has the greatest impulse

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.